• <tr id="yyy80"></tr>
  • <sup id="yyy80"></sup>
  • <tfoot id="yyy80"><noscript id="yyy80"></noscript></tfoot>
  • 99热精品在线国产_美女午夜性视频免费_国产精品国产高清国产av_av欧美777_自拍偷自拍亚洲精品老妇_亚洲熟女精品中文字幕_www日本黄色视频网_国产精品野战在线观看 ?

    Sustainability Ethics and Metrics: Strategies for Damage Control and Prevention

    2013-04-18 00:54:37NoamLior

    Noam Lior

    1Department of Mechanical Engineering and Applied Mechanics, University of Pennsylvania, Philadelphia PA 19104-6315, USA

    Sustainability Ethics and Metrics: Strategies for Damage Control and Prevention

    Noam Lior1?

    1Department of Mechanical Engineering and Applied Mechanics, University of Pennsylvania, Philadelphia PA 19104-6315, USA

    Submission Info

    Communicated by Zhifang Yang

    Sustainability

    Sustainability metrics

    Greenwashing

    Sustainability ethics

    Ethics

    It is generally and increasingly believed that humanity’s survival depends on adoption of sustainable development practices, which are based on adequate satisfaction of quantitatively defined and interrelated economical, environmental and social criteria. One can then argue that sustainable development has a meta-ethical foundation, a definition of right and wrong paths stemming from what one might consider a Universal Truth that is humanity’s desire to survive. One finds that “sustainability” is very much in vogue as a positive attribute, and more and more extensively used erratically and often improperly and even fraudulently over the entire social spectrum. Since sustainability is of vital importance to our survival, using its terminology in vain diminishes its vitally important value by desensitizing society and sowing distrust. Importantly, unethical usage of sustainability concepts causes much harm to the development of credible sustainability science. This paper briefly defines sustainability and its quantitative metrics, presents examples of ongoing ethical and unethical use of the concept, and recommends a path towards damage control that includes the development of internationally acceptable standards for that vital concept.

    ? 2013 L&H Scientific Publishing, LLC. All rights reserved.

    1 Introduction and motivation

    1.1 The sustainability imperative and definitions

    It is generally and increasingly believed that humanity’s survival depends on adoption of sustainable development practices, which are based on adequate satisfaction of the quantitatively defined and interrelated sustainability “pillars” of economics, environment and society, within appropriate space and timeboundaries1In view of the popularity of this perception, even those who are not convinced would be reticent to state otherwise if their activities and benefits thereof depend on popular good will.. “Sustainability” is therefore very much in vogue as a positive attribute, but the properly and strictly defined sustainable path often clashes in many of its aspects, in at least the short term, with human nature and corporate/institutional/governmental leadership “single bottom line” (or, a minimal number of bottom lines…) preferences. “Sustainability” is consequently more and more extensively used erratically and often improperly and even fraudulently over the entire social spectrum, by governments, institutions, business, industry, schools and individuals; e.g., a recent study stated that 98% of the 2,219 companies surveyed failed in at least one of the sustainability metrics applied [1]. A thorough study of 13 companies positioning themselves as being “Green” and considered to be environmental leaders concluded that they “are in fact exploiting green issues, through communications, policies, and reports to benefit themselves and to portray a favorable corporate image—green con-panies!” [2].

    The ivory (or ivy) towers of academia are not guiltless either. As one general example, a few years ago many have started initiatives for more sustainable campuses (e.g., American College & University Presidents Climate Commitment (ACUPCC), [3]), considering it as a total win-win endeavor: on the one hand encouraging reduction of use of energy, water, materials and goods that inherently reduce operational costs and tend to construct new buildings that should be cheaper to operate, and on the other hand improve the academic institutions’ appeal to current and future students who are also interested in learning more about sustainable development because it indeed is a desirable career path. Unfortunately, not unlike many corporations, there is much engagement and publicity but very little solid investment (“There is no financial obligation associated with signing the ACUPCC”) and quantitative accomplishment in becoming more sustainable. The goals and metrics also tend to be selective in addressing some but not all aspects of sustainability and there is much confusion between the commitment to climateneutrality objectives and between often repeated but not observed sustainability objectives. The ACUPCC 2009 report [3] starts with “The American College & University Presidents’ Climate Commitment (ACUPCC) is making a tremendous impact on the nation and the climate.”, but the only quantitative metric of accomplishment is the large number of schools that signed the “Commitment”, without any clear quantitative evidence of meeting climate neutrality goals. Perhaps it is too early to see progress, but the enthusiastic picture-splashed report of happy climate neutralizers and devices would have been more realistic if made appropriately (academically?) accurate and humble.

    Coming down to sustainability statements by individuals, we (including idealistic students) are quick to criticize businesses, but are the root of the problem: product appeal and price rather than its sustainability dominate, and for a small example, based on ecological footprint (EF) calculation by some 150 of my students, their average current lifestyle requires about 4.5 earths if everyone on earth used the same (this is 10% lower than for the average US citizen), with a predicted 11% reduction after they start their post-graduation life. Without arguing the accuracy of the EF metric, this is a very unsustainable lifestyle by individuals anyway, directly affecting corporate conduct.

    One of the key arguments in this paper is that in view of the vital importance of sustainable development to human progress and even survival, the use of the concept and its terminology in vain or fraudulently diminishes its vitally important value by desensitizing society and sowing distrust, and decisive steps must therefore be taken soon to treat its fraudulent use in a much more serious way than ordinary fraud.

    Rational sustainable development requires the development of quantitative sustainability science, which is indeed evolving through the efforts of the multi-disciplinary sustainability science community. Unethical usage of sustainability concepts, even just the commercial and political ones, also damages the utility and progress of the science.

    A serious obstacle to proper use of sustainability concepts, which also serves as a subterfuge for trans-gression, is the difficulty of establishing rigorous and easy-to-use definitions of the sustainability metrics, especially in the environmental and social pillars. The various path-breaking sustainability statements, such as those by Thomas Jefferson: “Then I say the Earth belongs to each generation during its course, fully and in its right no generation can contract debts greater than may be paid during the course of its existence“ (September 6, 1789) and much later the UN Brundtland Commission’s [4] of “Meet the current needs without destroying the ability of future generations to meet theirs.” are very qualitative and tolerate any population growth and unsustainable behavior by future generations, and excludes concern about destruction of the ability of the less fortunate members of the current generation to meet their reasonable needs (e.g., [5,6]). Work is progressing rapidly to characterize sustainability as a science, and to that end quantitative scientific definitions of its metrics and their mathematical development, aggregation, and use are evolving and gradually becoming a part of standards and regulations (e.g., , [5,7-12]). Since there are many definitions of sustainability indices and metrics, work is underway to establish usable, appropriate and commonly accepted criteria but much remains to be done, which also constitutes an exciting challenge for all stake holders, from the global public, to users and scholars.

    It is particularly very difficult to quantify environmental and social metrics. One (but only one of many) classical problem for the former is how to monetize biodiversity [13,14], and with the latter the tight relation to human values, which also vary widely by geography, customs, religion, etc. if there are no regulations that monetize them. For example, it is stated that corporate social responsibility attempts to achieve“commercial success in ways that honor ethical values and respect people, communities and the natural environment”[15], or “A sustainable corporation is one that creates profit for its shareholders while protecting the environment and improving the lives of those with whom it interacts” [16], and many others in the same vein, but these statements are extremely qualitative and not a metric yet. At the same time progress towards development of social sustainability understanding and metrics is progressing (e.g., Szekely and Knirsch’s [17], and Ehnert’s [18] work on quantifying the link between sustainability and human resources management, and the work by Azapagic and Perdan [19] on managing corporate sustainability). It is noteworthy that the social pillar is not only for the society external to the entity but also for treatment of its own employees. An incidental but good example of the ambiguity of even the simplest qualitative social sustainability understanding and definitions is that the acronym CSR is arbitrarily used to mean Corporate Social Responsibility, or Corporate Social Reporting or Corporate Sustainability Reporting, three very different concepts, where, for example the second is actually only a part of the third.

    The large body of literature on sustainability definitions (to some extent this paper included…) is dominated by much qualitative prose describing the situation, complaining about the complexity of the problem, and often stating the obvious, and recommending additional research, rather than providing some quantitative solutions. It is noteworthy for example, that LCA (Life Cycle Analysis) is an important tool and component of sustainability analysis, especially in that it provides the manufacturer useful long-term information about a product or activity, but it is not a substitute to sustainability analysis. It should also be realized that LCA is fraught with uncertainties, stemming mostly for uncertainties in predicting the future, and is best used to develop and compare scenarios with a range of assumptions about future characteristics.

    It is noteworthy that even in the imperfect and unstandardized form, sustainability criteria were and continue to be used in a number of important analyses (e.g. [20-22]).

    To make sustainable paths more economically acceptable, i.e. to change the “single bottom line” (or, a minimal number of bottom lines…) preferences to the “triple bottom line”, the literature and folklore are replete with attempts to convince that sustainable paths bring real value to those who take them, even in the short term and that in the long term they reduce future risk/problems with such as depletion of resources, eligibility for loans, impending regulation, loss of reputation/customers and impairment of ability and understanding of self-evaluation of progress towards sustainability (e.g. [16,23-25]). Despitemany examples presented that this win-win concept may be so, careful examinations reveals that many of these benefits have little to do with sustainable activities per se, but are simply steps to reduce costs or increase income activities that would have, or should have, been taken even if the concept of sustainable development did not exist at all. It also is becoming very clear that at this time most of the benefit for specifically sustainable approaches is in the intangible assets, such as reputation, popularity, recognition, etc. (Savitz and Weber [16] state that on average 75% of the assets of Fortune 500 companies are intangible). Such assets, especially of the transgressors themselves, are, at least in the longer term most vulnerable to transgressors’ misrepresentations and false sustainability claims.

    1.2 The ethics foundation

    Adopting the premise that sustainable development is of vital importance to humanity’s survival, we can argue that the concept and associated activities have ameta-ethicalfoundation, a definition of right and wrong paths stemming from what one might consider aUniversal Truththat is humanity’s desire to survive, which includes the parentally instinctive drive to protect our descendants and work towards their happy existence. Thenormativeform of this principle can then be expressed in the practical task of employinguniversalmoral standards (different from classical business morality definitions as the obligation to increase profits without deception or fraud [26]) that regulate right and wrong conduct in this complex area. It would involve the scientific definition of thegoodhabits that should be acquired and employed to that end, as well as the avoidance, prevention and condemnation of thebadhabits that typically accompany each moral drive, spawned by those who do not have the long term moral motivation but try to take advantage of the situation for personal benefit instead. Desirable normative moral behavior would provide all specific information about the product/process that allows the customer to be assured that it is actually truly sustainable based on thecustomer’s truth, without requiring that the customer should conduct the testing and validation: theCaveat Emptordoctrine should be replaced by theCaveat Venditorone. The ethical foundation of sustainability in the corporate context is receiving much attention (e.g. [27-31]).

    Observing the human condition, and realizing that legal measures to control false and fraudulent advertising, with associated punitive measures, exist worldwide, but that sustainability claims are largely not controlled, the University of Pennsylvania’s motto “Leges Sine Moribus Vanae”, unfortunately should be accompanied in this context by its flip side, approximately phrased “Mores Sine Legibus Vani”, intending here to state that it is useless to expect morality or ethics without appropriate laws and regulation. At the same time, a vulnerability of regulation without ethics is that the unethical would spend most of their effort in finding ways to bypass the regulation instead of working towards sustainable development. Building of universally ethical character and investment into Ethical Value Added is the long-term sustainable way to adopt if minimal regulation and most effective sustainable development are wanted (e.g. [29]),

    1.3 Transgressions categorization and risks of excessive penalization

    Literally innumerable examples of transgressive use of sustainability, as well as examples of how such improper use may (or may not…) have had negative impact on the transgressors, are available and rising. Much of the evidence can be found under “Greenwashing”, a practice to falsely promote or exaggerate the environmental friendliness of a product or service. It is noteworthy that Greenwashing is only a subset of false sustainability claims, since it addresses only the environmental pillar, but not the social or economical. There are many types of sustainability transgressions (e.g., TerraChoice [1] cites “the seven sinsof Greenwashing” and states that 98% of the 2,219 products it examined committed at least one of these sins), and it is useful to paraphrase some of the common ones: absence of proof, vagueness, irrelevance (claim of features where their absence would have been be illegal anyway, or touting an accurate representation of the content of some ingredient in a product that in fact doesn’t, however, improve its effect on the user), partial truth that hides other important issues that offset the claimed advantages, false labeling, false claims of third-party certification, and…outright lying. Due diligence must be applied in examining sustainability claims, without forgetting to consider also the manufacturing location/country, whether the emissions and energy and resource use and depletion were outsourced together with the manufacturing, the supply chain’s sustainability, and the transportation distance and associated energy use and emissions. Furthermore, the social aspects may need to include attention to loss of jobs due to work outsourcing.

    False sustainability claims are sometimes subject to “punishments”, legal or otherwise. Apart from the legal ones, the other “punishments” include negative customer or general public reaction directly or via social media, negative evaluation by NGO-s that are professionally involved in judging veracity, such as EcoLogo [32], Green Seal [33], Blue Angel [34], the Dow Jones Sustainability Indexes [35], Ftse4Good [36], GRI [37], and by bloggers. Excessive negative actions by non-legal bodies is, however, likely to create reactions that are counterproductive, one of which is that the subject of criticism becomes less forthcoming about its sustainability performance. For example, Lyon and Maxwell [38] show that mandatory disclosure rules offer the potential for better performance than NGO auditing, but that the necessary penalties may be so large as to be politically disagreeable, and that the best approach is a mix of mandatory disclosure rules, NGO auditing and environmental management. A futility of voluntary rather than mandatory disclosures and compliance was demonstrate in the careful analysis by Lyon and Kim [39] of the consequence of the USDOE Guidelines for Voluntary Greenhouse Gas Reporting, who discovered a negative relationship between environmental performance and environmental disclosures: overall, participants in the Voluntary Registry increased emissions over time but reported reductions, while nonparticipants decreased emissions over time. Simply stated, since there was no effort to validate the voluntary disclosure, companies that participated tended to exaggerate performance rather than improve it.

    Another problem is the qualification of the NGO to make evaluations and judgment. Since a framework to certify or validate such NGO-s does not seem to exist, it is possible that the evaluating NGO may be incompetent or swayed by popular prejudices. Inappropriately conducted evaluations damage sustainable development as much as Greenwashing does, and a certification and assurance frame should be put in place (e.g., [40]). Further, there are many examples of entities that honestly undertake activities to advance some, but not all, aspects of sustainability. As long as the advancements are not annulled by simultaneous engagement in new unsustainable activities, they should be applauded rather than ridiculed. This would hopefully further positive steps.

    1.4 Damages, risks, and dangers of false claims

    As stated in the Introduction, the rising tsunami of false claims that products, and technological, governmental, social and environmental processes and activities are “sustainable” creates great damage to sustainable development. Apart from desensitizing society and sowing distrust, false sustainability claims frustrate customers and investors who seek socially responsible buying and investing, diminish a company’s attractiveness to its more idealistic and younger employees and potential employees, and severely diminish the value and investments of those who really engage in sustainable activities or make sustainable products and truthfully claim sustainability. There are also self-defeating circumstances in which an entity indeed invests in sustainable development with good success, but at the same time either exaggerates the claims or falsely makes unsubstantiated ones. Finally, in these era of extensive mass media ac-cess and tools, in which the spectrum includes bloggers, Facebook, Twitter, You Tube, Wikipedia and Wiki-Leaks (a few of the sites focused on these issues are listed in the references include Greenwashing Index [41], Greenpeace [42], EnviroMedia [43], and TerraChoice [1]) puts false-claimers at a great risk,“It takes 20 years to build a reputation and five minutes to ruin it. If you think about that, you'll do things differently,” as Warren Buffet is quoted to have said.

    1.5 Some possible remedies

    1.5.1 Regulation

    Legal measures to control false and fraudulent advertising, with associated punitive measures, exist worldwide, but sustainability claims, especially in the absence of mandatory requirements for sustainability reporting, are largely not controlled. This is especially worrisome because of the much higher and global importance of sustainable development than of false advertising of, say, some commercial product, and is complicated by ongoing globalization of product, service and capital markets, which is on the one hand of vital importance to the propagation and advancement of sustainable development, but which, on the other hand, has so far left governments with inadequate tools to monitor and regulate international trade and investments, and multi-national corporations [44]. In fact, that importance of the problem should be reflected in tighter regulation and higher punishments, sort of like the differentiation in the US law between regular and hate crimes.

    In the US, the Federal Trade Commission (FTC) provides guidelines for environmental marketing claims (“Green Guide”), and the guidelines are being extended in many ways, one of them being the inclusion of claims about renewable energy [45]. These guidelines give the FTC the right to prosecute false and misleading advertisement claims. The guidelines are not enforceable and were intended to be followed voluntarily. In addition, the EPA and various states have enacted numerous regulations about environmental matters, often conflicting and inconsistent, “a crazy quilt of laws and regulations” as Barnett calls it [44]. Furthermore, these regulations address only environmental issues and not all pillars of sustainability. A compendium of voluntary environmental standards and discussion of FTC activities in that area can be found in [46].

    At least the economic pillar of sustainability could be regulated in the US in some of its aspects by the U.S. Securities and Exchange Commission (SEC), and in other countries by their own bodies with similar roles. Since corporate sustainability is an important part of its assets/value, it would be most appropriate if corporate financial statements would be required to present clear and transparent information about this part of the value creation for shareholders. The GRI method can be extended to introduce a system of corporate sustainability rating similar to the current system of credit rating, as currently done by rating agencies such as Moody’s, Standard & Poor’s, and Fitch, to be based on a ratings grid composed of acceptable sustainability metrics. More generally, the multi-faceted nature of sustainability demands, as most of the experts in the published literature agree, that some form of legislation carefully composed by all stake-holding branches and departments of a government, must be established to guide or govern sustainability claims. In the US government these would include, from the executive branch, the Departments of Justice, the Interior, Agriculture, the Treasury, Commerce, Transportation, Energy, Education, Labor, Health and Human Services, Housing and Urban Development, and State, as well as specific bodies such as the EPA, FTC, and SEC. Congress and Senate should be encouraged to formulate legislation as needed.

    Clearly, uniform federal regulations to give the regulated community guidance on the representation of sustainable attributes in marketing and advertising are highly recommended. At the same time, as stated in the section on ethics in this paper, compliance with regulations only is typically an inadequate solution if it is not accompanied by an ethical foundation that rationalizes the compliance and averts undesir-able solutions that are often focused on finding ways to bypass the regulations (e.g., [27,29]).

    1.5.2 Voluntary measures and third party certification

    Responsible and timely action by NGO-s and markets would reduce the need for governmental intervention. The Dow Jones Sustainability Indexes [35], FTSE4Good [36], Winslow Green Growth Fund [47], and similar are good examples of free market investment tools that focus on sustainable companies and thereby encourage factual reporting and sustainable activities. In the third party certification category are network-based organizations that conduct sustainability reporting and grade performance, of which perhaps the most widely used is GRI [34], which now addresses not just environmental performance reporting but also the social and economic (excluding financial accounting) dimensions of sustainability [37,48]. The GRI method can be extended to introduce a system of corporate sustainability rating akin to the current system of credit rating, as currently done by rating agencies such as Moody’s, S&P, and Fitch, now to be based on a ratings grid composed of acceptable sustainability metrics [49].

    Private organizations that evaluate, certify and grade some or all aspects of sustainability of products include the German Blue Angel (Blauer Engel, since 1978, [34]), The Global Ecolabelling Network (GEN) [50], the EU Ecolabel [51], and in the US and Canada EcoLogo [32] by the Canadian Government, and Green Seal [33] (several also consider the product lifecycle). They are typically self-governed and gain their credibility from including a wide spectrum of reputable organizations and individuals in their management group.

    There are also an increasing number of voluntary standards developed by reputable professional organizations, including:

    · ISO 14001 [52], which is one of the most frequently adopted standards in the area of corporate responsibility and is widely recognized as an international standard for environmental management. It was developed by ISO, a network of national standards institutes in most world countries

    · AA1000 Assurance Standard [53] that covers an organization’s disclosure and associated sustainability performance, by Account Ability, an international membership-based professional institute.

    · SA8000 [54] is a global social accountability standard with certification, which includes supply chain labor standards, developed by Social Accountability International (SAI), based on ILO conventions and linked to UN norms.

    Several private organizations, such as the World Business Council for Sustainable Development [55] are there to assist businesses in their path to sustainability.

    1.5.3 Wise regulation

    Any regulatory effort creates new bureaucracies, introduces expenses of money and time, and creates delays, and especially in the business world must insure confidentiality and trust.

    As already stated above, unwise regulation may be counterproductive in advancing sustainable development and must be planned … sustainably.

    2 Conclusions and recommendations

    It is widely accepted that sustainable development is of vital importance to humanity and that false sustainability claims are universally unethical in that they are not only significantly damaging to fair business competition and trade, but also to the dire need for humanity’s progress towards sustainability. Consequently, much stronger and faster action must be taken to arrest this negative phenomenon and trend.

    The first step towards this goal is the development of sensible, correct, easily usable and widely (up tothe global level) acceptable definitions of quantitative indices/metrics and of ways for using them for the definition of sustainable activities, products and development in general. This should be a joint effort by corporations, professional associations, NGO-s and all stakeholders, with at least some oversight by governments. A second step, just as important, is building up an ethical foundation that would shun such transgressions and divert the energies from unethical behavior, which most often backfire in the long term anyway, to sincere engagement in sustainable development.

    Regulations must be developed to extend beyond the commonly addressed environmental (green) sustainability pillar, thus also to the economic and social pillars, to address sustainability fully. Such sustainable characterization and reporting regulations must be developed by the widest and well-coordinated consortium of stakeholders, to include governments and their different departments, and the United Nations.

    One specific extension towards the economic pillar would be to move towards SEC rules2or in other countries of their own bodies with roles similar to the US Securities and Exchange Commission (SEC).on the materiality of sustainability data akin to rules on earnings and profits, integrating sustainability metrics and reporting into financial reporting, and requiring companies to practice accounting for sustainability in a prescribed uniform way.

    There is an absolute and urgent need for strongly standardized sustainability reporting and assured independent auditing, from the national to the global level. The sustainable way to sustainable development, with minimal regulations and maximal long-term effectiveness, is the construction of a solid foundation of universally ethical behavior.

    Acknowledgment

    My students’ Anandi Malik and Ashima Sukhdev contributed to the information collection and analysis.

    [1] Choice, Terra (2009), 2009 Report "The sins of Greenwashing", Available at:<http://sinsofgreenwashing.org/findings/greenwashing-report-2009/>. [accessed 15.3.2011].

    [2] Saha, M. and Darnton G. (2005), Green Companies or Green Con-panies: Are Companies Really Green, or Are They Pretending to Be?Business and Society Review, 110(2), 117-157.

    [3] American College & University Presidents Climate Commitment (2011). Available at:<http://www.presidentsclimatecommitment.org>. [accessed 15.3.2011].

    [4] UN World Commission on Environment and Development (1987),Our Common Future: Report of the World Commission on Environment and Development.

    [5] Lior, N. (2008),About sustainability metrics for energy development, invited keynote presentation and proceedings paper at the 6th Biennial International Workshop "Advances in Energy Studies", Graz, Austria, 29 June - 2 July 2008; Graz University of Technology Publication ISBN 978-3-85125-018-3, pp. 390-401.

    [6] Kaufman, F. (2009), The end of sustainability,Int. J. Sustainable Society, I(4), 383-390.

    [7] Azapagic, A. and Perdan S. (2000). Indicators of Sustainable Development for Industry: A General Framework,IChemE Trans, 78(B4), 243-261.

    [8] Afgan, N.H., Carvalho, M.G. and Hovanov, A.N. (2000), Energy system assessment with sustainability indicators,Energy Policy, 28(9), 603-612.

    [9] Sikdar, S.K., Glavi?, P. and Jain, R. (2004),Tehnological Choices for Sustainability, Berlin: Springer.

    [10] Diwekar, U. (2005), Green process design, industrial ecology, and sustainability: A systems analysis perspective,Resources, Conservation and Recycling, 44, 215-235.

    [11] Tonon, S., Brown, M.T., Luchi, F., Mirandola, A., Stoppato, A. and Ulgiati, S. (2006), An integrated assessment of energy conversion processes by means of thermodynamic, economic and environmental parameters,Energy, 31, 149-163.

    [12] B?hringer, C. and Jochem. P.E. (2007), Measuring the immeasurable - A survey of sustainability indices,Ecological Economics, 63(1), 1-8.

    [13] Pearce, D. and Moran, D. (1995),The Economic Value of Biodiversity, London: Earthscan,

    [14] O'Neill, J. (1997), Managing without prices: The monetary valuation of biodiversity,Ambio, 26(8), 546-550.

    [15] Bhattacharya, C.B. and Sen, S. (2004), Doing better at doing good: when, why and how consumers respond to corporate social initiatives,California Management Review, 47(1), 9-24.

    [16] Savitz, A.W. and Weber, K. (2006),The Triple Bottom Line, Wiley: Josey-Bass.

    [17] Szekely, F. and Knirsch, M. (2005), Responsible leadership and corporate social responsibility: Metrics for sustainable performance,European Management Journal, 23(6), 628-647.

    [18] Ehnert, I. (2009), Sustainability and human resource management: reasoning and applications on corporate websites,European Journal of International Management, 3(4), 419-438.

    [19] Azapagic, A. and Perdan, S. (2003), Managing corporate social responsibility: Translating theory into business practice,International Journal of Corporate Sustainability, 10, 97-108.

    [20] Vera, I. and Langlois, L. (2007), Energy indicators for sustainable development.Energy, 32,875-882.

    [21] World Bank (2011). Focus on Sustainability (2004), Available at: http://www.wds.worldbank.org/external/default/WDSContentServer/WDSP/IB/2005/02/07/000009486_20050207160411/ Rendered/PDF/315170FocusOnSustainability200401public1.pdf. [accessed 15.3.2011].

    [22] United Nations Department of Economic and Social Affairs. (2001),Indicators of sustainable development: guidelines and methodologies, Second ed., New York: UNDESA.

    [23] O’Holliday, C.O., Jr. Schmidheini, S. and Watts, P. (2002),Walking the talk: the business case for sustainable development, Greenleaf publishing, San Francisco: Berrett-Koehler Publishing, Inc.

    [24] Salzmann, O., Ionescu-Somers, A. and Steger, U. (2005), The business case for corporate sustainability: Literature review and research options,European management Journal, 23(1), 27-36.

    [25] Esty, D.C. and Winston, A.S. (2006),Green to Gold, New Haven and London: Yale University Press.

    [26] Friedman, M. (1962),Capitalism and Freedom, Chicago: University of Chicago Press.

    [27] Davis, J.J. (1992), Ethics and Environmental Marketing,Journal of Business Ethics, 11, 81-87.

    [28] Folkes, V.S. and Kamins, M.A. (1999), Effects of information about firms’ ethical and unethical actions on consumers’attitudes,Journal of Consumer Psychology, 8(3), 243-259.

    [29] Gates, J.B. (2004), The ethics commitment process: sustainability through value-based ethics,Business and Society Review, 109(4), 493-505.

    [30] Balmer, J.M.T., Fukukawa, K. and Gray, E.R. (2007), The nature and management of ethical corporate identity: A commentary on corporate identity, corporate social responsibility and ethics,Journal of Business Ethics, 76(1), 7-15.

    [31] Van de Ven, B. (2008), An ethical framework for the marketing of corporate social responsibility,Journal of Business Ethics, 82(2), 339-352.

    [32] EcoLogo Program (2011), Available at: <http://www.ecologo.org/en/index.asp>. [accessed 15.3.2011].

    [33] Green, Seal (2011), Available at: <http://www.greenseal.org/>. [accessed 15.3.2011].

    [34] Blue Angel (Blauer Engel) (2011), Available at: <http://www.blauer-engel.de/en/>. [accessed 15.3.2011].

    [35] Dow Jones Sustainability Indexes in collaboration with SAM (2011), Available at: <http://www.sustainability-index.com/>[accessed 15.3.2011].

    [36] FTSE4Good Index Series (2011), Available at: <http://www.ftse.com/Indices/FTSE4Good_Index_Series/index.jsp>. [accessed 15.3.2011].

    [37] GRI (the Global Reporting Initiative) (2011), Available at: <http://www.globalreporting.org/Home>. [accessed 15.3.2011].

    [38] Lyon, T.P. and Maxwell, J.W. (2011), Greenwash: Corporate Environmental Disclosure under Threat of Audit, Ross School of Business Working Paper No. 1055, March 2006, University of Michigan, Available at:<http://ssrn.com/Abstract=938988>. [accessed 15.3.2011].

    [39] Lyon, T.P. and Kim, E.H. (2011), Greenhouse Gas Reductions or Greenwash? The DOE’s 1605b Program! University of Michigan 2008, Available at: <www.energy.umich.edu/res/pdfs/Lyon_Kim_1605b_August_2007.pdf>. [accessed 15.3.2011].

    [40] Ballou, B., Heitger, D.L. and Landes, C.E. (2006), The future of corporate sustainability reporting - A rapidly growing assurance opportunity,Journal of Accountancy, 65-74.

    [41] Greenwashing Index. (2011), Available at: http://www.greenwashingindex.com/. [accessed 15.3.2011].

    [42] Greenpeace. (2011), Available at: <http://stopgreenwash.org/>. [accessed 15.3.2011].

    [43] EnviroMedia Social Marketing and the University of Oregon (2011), Available at:<http://www.greenwashingindex.com/criteria.php>. [accessed 15.3.2011].

    [44] Barnett, E.H. (1994-1995), Green with envy: the FTC, the EPA, the states, and the regulation of environmental marketing. Environmental Law, 491.

    [45] FTC (2010), Green Guide, Available at: <http://www.ftc.gov/opa/2010/10/greenguide.shtm>. [accessed 15.3.2011].

    [46] Case, S. (2007), Beware of Greenwashing-Not all Environmental Claims are Meaningful,Government Procurement, 18-23, Available at: <www.govpro.com>. [accessed 15.3.2011].

    [47] Winslow Green Growth Fund (2011), Available at: <www.winslowgreen.com>. [accessed 15.3.2011].

    [48] Willis, A. (2003). The role of the global reporting initiative’s sustainability reporting guidelines in the social screening ofinvestments,Journal of Business Ethics,43, 233-237.

    [49] McKinsey & Company (2010), How companies manage sustainability: Global Survey Results. McKinsey Quarterly, Available at: http://www.mckinseyquarterly.com/How_companies_manage_sustainability_McKinsey_Global_Survey _results__2558.

    [50] Global Ecolabelling Network (GEN) (2011), Available at: http://www.globalecolabelling.net/. [accessed 15.3.2011].

    [51] Ecolabel, E.U. (2011), Available at: http://ec.europa.eu/environment/ecolabel/index_en.htm. [accessed 15.3.2011].

    [52] Ecolabel, E.U. (2011), Available at: http://ec.europa.eu/environment/ecolabel/index_en.htm. [accessed 15.3.2011].

    [53] AccountAbility, AA1000 Assurance Standard (2011), Available at: http://www.corporateregister.com/aa1000as/licensing/. [accessed 15.3.2011].

    [54] Social Accountability International, Standard Social Accountability 8000 (2011), Available at:< http://www.sa-intl.org/_data/n_0001/resources/live/2008StdEnglishFinal.pdf>. [accessed 15.3.2011].

    [55] World Business Council for Sustainable Development (WBCSD) (2011), Available at: <http://www.wbcsd.org/>. [accessed 15.3.2011].

    2 January 2013

    ?Corresponding author.

    Email address: lior@seas.upenn.edu

    ISSN 2325-6192, eISSN 2325-6206/$- see front materials ? 2013 L&H Scientific Publishing, LLC. All rights reserved.

    10.5890/JEAM.2013.01.002

    Accepted 25 February 2013

    Available online 2 April 2013

    欧美日韩亚洲高清精品| 一个人观看的视频www高清免费观看 | 日本黄色日本黄色录像| 99在线人妻在线中文字幕| 超碰97精品在线观看| 大型黄色视频在线免费观看| 国产三级在线视频| 国产一卡二卡三卡精品| 久久久久久久久久久久大奶| 首页视频小说图片口味搜索| 久久香蕉激情| 最新在线观看一区二区三区| 色综合欧美亚洲国产小说| 50天的宝宝边吃奶边哭怎么回事| 九色亚洲精品在线播放| 精品电影一区二区在线| 国产免费av片在线观看野外av| 成人免费观看视频高清| 亚洲黑人精品在线| 亚洲国产精品一区二区三区在线| 国产精品日韩av在线免费观看 | 免费久久久久久久精品成人欧美视频| 欧美黑人欧美精品刺激| 男人舔女人的私密视频| 国产av在哪里看| 午夜a级毛片| 一级a爱片免费观看的视频| 午夜福利,免费看| 午夜福利在线免费观看网站| 免费在线观看黄色视频的| 国产单亲对白刺激| av福利片在线| 久久热在线av| 女同久久另类99精品国产91| 免费看a级黄色片| 久久亚洲精品不卡| 欧美激情极品国产一区二区三区| 如日韩欧美国产精品一区二区三区| 性欧美人与动物交配| av天堂久久9| 国产熟女xx| www日本在线高清视频| 三上悠亚av全集在线观看| 桃色一区二区三区在线观看| 欧美日韩国产mv在线观看视频| 久久久久久人人人人人| 黄色视频不卡| 久久午夜亚洲精品久久| 高清av免费在线| 国产单亲对白刺激| 三级毛片av免费| 黄频高清免费视频| 午夜免费鲁丝| 无人区码免费观看不卡| 国产精品自产拍在线观看55亚洲| 波多野结衣高清无吗| 午夜视频精品福利| 人人妻,人人澡人人爽秒播| 久久精品国产清高在天天线| 亚洲九九香蕉| 亚洲成a人片在线一区二区| 国产亚洲欧美98| 精品久久久久久成人av| 老司机亚洲免费影院| 久久精品91蜜桃| 我的亚洲天堂| 国产成人一区二区三区免费视频网站| 久久人人97超碰香蕉20202| 亚洲自偷自拍图片 自拍| 韩国av一区二区三区四区| 国产亚洲欧美98| 美女 人体艺术 gogo| 夫妻午夜视频| 两性午夜刺激爽爽歪歪视频在线观看 | 亚洲精品在线美女| 久久久久久久精品吃奶| 国产真人三级小视频在线观看| 黄色 视频免费看| 纯流量卡能插随身wifi吗| 1024香蕉在线观看| 久久久久九九精品影院| 最近最新中文字幕大全电影3 | 国产一区二区激情短视频| 亚洲七黄色美女视频| 十八禁网站免费在线| 国产真人三级小视频在线观看| 色在线成人网| 97人妻天天添夜夜摸| 成人精品一区二区免费| 精品日产1卡2卡| 这个男人来自地球电影免费观看| 精品免费久久久久久久清纯| 亚洲精品美女久久av网站| 亚洲av日韩精品久久久久久密| 亚洲精品中文字幕一二三四区| 欧美乱妇无乱码| 黄色丝袜av网址大全| 老司机亚洲免费影院| av中文乱码字幕在线| 国产欧美日韩精品亚洲av| 丝袜人妻中文字幕| 国产av一区在线观看免费| 免费在线观看视频国产中文字幕亚洲| 无遮挡黄片免费观看| 岛国视频午夜一区免费看| 最近最新免费中文字幕在线| 亚洲欧洲精品一区二区精品久久久| 一边摸一边抽搐一进一出视频| 咕卡用的链子| 亚洲精品av麻豆狂野| www国产在线视频色| 欧美激情高清一区二区三区| 欧美日韩中文字幕国产精品一区二区三区 | 一区二区三区国产精品乱码| 亚洲熟女毛片儿| 亚洲第一欧美日韩一区二区三区| av国产精品久久久久影院| 美女国产高潮福利片在线看| 日本三级黄在线观看| 精品久久蜜臀av无| 天堂中文最新版在线下载| 国产亚洲欧美在线一区二区| 婷婷六月久久综合丁香| 亚洲精品在线美女| 热99国产精品久久久久久7| 欧美人与性动交α欧美软件| 亚洲午夜精品一区,二区,三区| 老司机在亚洲福利影院| 亚洲中文字幕日韩| 成人18禁在线播放| 视频区图区小说| 99久久国产精品久久久| 男女之事视频高清在线观看| 国内毛片毛片毛片毛片毛片| 国产免费现黄频在线看| 久久久久久久午夜电影 | 热99re8久久精品国产| xxx96com| www.自偷自拍.com| 亚洲av熟女| 亚洲熟妇中文字幕五十中出 | 女性被躁到高潮视频| 亚洲 欧美一区二区三区| www.精华液| 午夜久久久在线观看| 老司机午夜福利在线观看视频| 级片在线观看| 搡老乐熟女国产| av在线天堂中文字幕 | 午夜成年电影在线免费观看| 久久热在线av| 亚洲五月色婷婷综合| 丰满的人妻完整版| 一级,二级,三级黄色视频| 校园春色视频在线观看| 欧美最黄视频在线播放免费 | 69精品国产乱码久久久| 亚洲久久久国产精品| 精品一品国产午夜福利视频| 国产亚洲精品第一综合不卡| 亚洲av成人不卡在线观看播放网| 精品国产超薄肉色丝袜足j| 黑人巨大精品欧美一区二区mp4| 亚洲五月色婷婷综合| 97碰自拍视频| 狠狠狠狠99中文字幕| 青草久久国产| 精品国产乱子伦一区二区三区| 久久久久国产精品人妻aⅴ院| 黄片播放在线免费| 99精品在免费线老司机午夜| 久久国产精品人妻蜜桃| 成年女人毛片免费观看观看9| 精品久久蜜臀av无| 国产高清videossex| av电影中文网址| 又黄又粗又硬又大视频| 级片在线观看| 老司机午夜十八禁免费视频| 一区在线观看完整版| 久久九九热精品免费| a级毛片在线看网站| 女性生殖器流出的白浆| 99在线人妻在线中文字幕| 国产有黄有色有爽视频| 成人三级做爰电影| 国产精品亚洲一级av第二区| 亚洲av成人av| 国产国语露脸激情在线看| 91在线观看av| 亚洲精品久久成人aⅴ小说| 日本a在线网址| 久久久久国内视频| 在线观看免费午夜福利视频| 美女高潮到喷水免费观看| 亚洲第一青青草原| 99在线人妻在线中文字幕| 露出奶头的视频| 别揉我奶头~嗯~啊~动态视频| 色尼玛亚洲综合影院| 亚洲精品成人av观看孕妇| 国产av一区二区精品久久| 国产精品 国内视频| 高清毛片免费观看视频网站 | 19禁男女啪啪无遮挡网站| 久久香蕉国产精品| 国产成人影院久久av| 夜夜夜夜夜久久久久| 精品久久久久久久久久免费视频 | 天堂中文最新版在线下载| 亚洲情色 制服丝袜| 久久人人精品亚洲av| 国内毛片毛片毛片毛片毛片| 午夜精品在线福利| www.精华液| xxxhd国产人妻xxx| 曰老女人黄片| 12—13女人毛片做爰片一| 午夜免费成人在线视频| 99在线人妻在线中文字幕| 麻豆国产av国片精品| 在线十欧美十亚洲十日本专区| 一进一出好大好爽视频| 欧美成人性av电影在线观看| bbb黄色大片| 午夜成年电影在线免费观看| 成人18禁在线播放| 一区二区三区国产精品乱码| 激情视频va一区二区三区| 国产精品国产av在线观看| 免费人成视频x8x8入口观看| 国产欧美日韩一区二区精品| 最近最新中文字幕大全电影3 | 黄色视频,在线免费观看| 久9热在线精品视频| av片东京热男人的天堂| 国产精品永久免费网站| 精品国内亚洲2022精品成人| 不卡一级毛片| 国产一区二区三区综合在线观看| 在线观看午夜福利视频| 丰满人妻熟妇乱又伦精品不卡| 国产精品乱码一区二三区的特点 | 久久久久国内视频| 欧美精品啪啪一区二区三区| 亚洲人成77777在线视频| 欧美大码av| 日韩成人在线观看一区二区三区| 美女 人体艺术 gogo| 老司机在亚洲福利影院| 午夜免费观看网址| 国产亚洲精品久久久久5区| 两个人免费观看高清视频| 亚洲狠狠婷婷综合久久图片| 欧美日韩福利视频一区二区| 麻豆成人av在线观看| 国产成人精品在线电影| 可以在线观看毛片的网站| 午夜a级毛片| 黄色片一级片一级黄色片| 亚洲专区国产一区二区| 黄频高清免费视频| 欧美乱码精品一区二区三区| 国产精品日韩av在线免费观看 | 男男h啪啪无遮挡| 精品乱码久久久久久99久播| 一级片'在线观看视频| 波多野结衣高清无吗| 久久性视频一级片| 一边摸一边抽搐一进一出视频| 午夜福利在线免费观看网站| 91精品国产国语对白视频| 宅男免费午夜| 国产高清videossex| 国产精品久久久av美女十八| 国产麻豆69| 老汉色∧v一级毛片| 国产精品久久视频播放| 国产精品乱码一区二三区的特点 | 亚洲一卡2卡3卡4卡5卡精品中文| 久久国产精品影院| 国产成人精品无人区| 国产亚洲精品综合一区在线观看 | 咕卡用的链子| 日韩视频一区二区在线观看| 在线观看免费高清a一片| 80岁老熟妇乱子伦牲交| 日韩欧美在线二视频| 无遮挡黄片免费观看| 一区二区三区精品91| 女性被躁到高潮视频| 男女做爰动态图高潮gif福利片 | 亚洲男人的天堂狠狠| 婷婷精品国产亚洲av在线| 久9热在线精品视频| 又紧又爽又黄一区二区| 高清黄色对白视频在线免费看| 精品卡一卡二卡四卡免费| 亚洲精品美女久久av网站| 国产高清国产精品国产三级| 亚洲激情在线av| 成人亚洲精品av一区二区 | 操出白浆在线播放| 黄色a级毛片大全视频| 亚洲欧洲精品一区二区精品久久久| 好看av亚洲va欧美ⅴa在| 欧美黄色片欧美黄色片| 亚洲一卡2卡3卡4卡5卡精品中文| 一本大道久久a久久精品| 久热这里只有精品99| 又大又爽又粗| 欧美久久黑人一区二区| 99国产精品99久久久久| 巨乳人妻的诱惑在线观看| 国产精品 国内视频| 9色porny在线观看| 久久久久亚洲av毛片大全| 久久久久久久久久久久大奶| 99精品在免费线老司机午夜| 国产真人三级小视频在线观看| 性少妇av在线| 国产亚洲精品第一综合不卡| 免费在线观看亚洲国产| 精品人妻1区二区| 欧美日韩一级在线毛片| 99久久久亚洲精品蜜臀av| 18禁裸乳无遮挡免费网站照片 | 在线观看免费午夜福利视频| 午夜精品国产一区二区电影| 99在线视频只有这里精品首页| 亚洲成人免费电影在线观看| a在线观看视频网站| 欧美日韩精品网址| a级毛片在线看网站| 亚洲一区中文字幕在线| 久久久久久久久久久久大奶| 精品福利观看| av超薄肉色丝袜交足视频| 欧美国产精品va在线观看不卡| 日韩欧美免费精品| 又黄又粗又硬又大视频| 亚洲国产精品一区二区三区在线| 国产精品乱码一区二三区的特点 | 精品午夜福利视频在线观看一区| 在线视频色国产色| 欧美中文日本在线观看视频| 在线视频色国产色| 一级片'在线观看视频| 精品人妻1区二区| 日本wwww免费看| 自线自在国产av| 久99久视频精品免费| 久久婷婷成人综合色麻豆| 中国美女看黄片| 国产免费男女视频| 国产精品自产拍在线观看55亚洲| 国产成+人综合+亚洲专区| 成人亚洲精品一区在线观看| 9191精品国产免费久久| 久久中文字幕一级| 岛国在线观看网站| 精品免费久久久久久久清纯| 欧美不卡视频在线免费观看 | 国产高清视频在线播放一区| 无人区码免费观看不卡| 国产男靠女视频免费网站| aaaaa片日本免费| 久久欧美精品欧美久久欧美| 桃色一区二区三区在线观看| 久久久国产欧美日韩av| 中出人妻视频一区二区| 99re在线观看精品视频| 国产精品 欧美亚洲| 国产免费av片在线观看野外av| 成人18禁在线播放| 人人妻人人爽人人添夜夜欢视频| av国产精品久久久久影院| 午夜日韩欧美国产| 亚洲av电影在线进入| 黑人操中国人逼视频| videosex国产| 久久精品国产综合久久久| 亚洲性夜色夜夜综合| 香蕉久久夜色| 久久久久久久精品吃奶| 国产视频一区二区在线看| 桃红色精品国产亚洲av| 成人av一区二区三区在线看| 午夜老司机福利片| 欧美+亚洲+日韩+国产| 很黄的视频免费| 婷婷精品国产亚洲av在线| e午夜精品久久久久久久| 男女午夜视频在线观看| 亚洲欧美精品综合久久99| 国产xxxxx性猛交| 婷婷丁香在线五月| 精品国产美女av久久久久小说| 久久午夜综合久久蜜桃| 99在线人妻在线中文字幕| 久久国产亚洲av麻豆专区| 午夜福利在线免费观看网站| 韩国av一区二区三区四区| 中文字幕人妻丝袜制服| 激情在线观看视频在线高清| 久久久久九九精品影院| 纯流量卡能插随身wifi吗| 日本wwww免费看| 久久人人精品亚洲av| 91麻豆av在线| 亚洲激情在线av| 午夜免费鲁丝| 亚洲狠狠婷婷综合久久图片| 色婷婷久久久亚洲欧美| www.www免费av| 国产99白浆流出| 操出白浆在线播放| 精品人妻1区二区| 老司机午夜福利在线观看视频| 一a级毛片在线观看| 99久久综合精品五月天人人| 新久久久久国产一级毛片| 精品熟女少妇八av免费久了| 人人妻人人澡人人看| 国产亚洲欧美精品永久| 欧美精品啪啪一区二区三区| 天堂√8在线中文| 在线播放国产精品三级| 成人三级黄色视频| 超色免费av| 岛国在线观看网站| 亚洲九九香蕉| 中文字幕av电影在线播放| 亚洲成人国产一区在线观看| 夫妻午夜视频| 精品一品国产午夜福利视频| 91麻豆av在线| 免费看a级黄色片| 无人区码免费观看不卡| 国产又爽黄色视频| 丰满迷人的少妇在线观看| 国产黄a三级三级三级人| 9191精品国产免费久久| 亚洲aⅴ乱码一区二区在线播放 | 18禁裸乳无遮挡免费网站照片 | 一区二区三区国产精品乱码| 18禁美女被吸乳视频| 国产精品一区二区精品视频观看| 国产精品成人在线| 国产成人欧美| 首页视频小说图片口味搜索| 他把我摸到了高潮在线观看| 精品国内亚洲2022精品成人| 欧美日韩亚洲综合一区二区三区_| 激情在线观看视频在线高清| 国产av又大| 亚洲精品在线观看二区| 三级毛片av免费| 国产亚洲精品第一综合不卡| 国内久久婷婷六月综合欲色啪| 欧美黄色片欧美黄色片| 9191精品国产免费久久| 久久亚洲真实| 麻豆久久精品国产亚洲av | 午夜福利一区二区在线看| 人人妻人人添人人爽欧美一区卜| 视频区欧美日本亚洲| 国产精品乱码一区二三区的特点 | 久久久久久久久免费视频了| 久久久精品欧美日韩精品| 美女国产高潮福利片在线看| 真人一进一出gif抽搐免费| 999精品在线视频| 成人黄色视频免费在线看| 国产精品影院久久| 多毛熟女@视频| 久久天堂一区二区三区四区| 一级毛片高清免费大全| 久久久久久久精品吃奶| 丝袜在线中文字幕| www国产在线视频色| 精品国产美女av久久久久小说| 日日夜夜操网爽| 欧美日韩乱码在线| 黄网站色视频无遮挡免费观看| 午夜老司机福利片| 久久精品aⅴ一区二区三区四区| 亚洲欧美日韩高清在线视频| 中文字幕另类日韩欧美亚洲嫩草| 午夜两性在线视频| 99久久精品国产亚洲精品| 国产主播在线观看一区二区| 日日爽夜夜爽网站| 99国产精品一区二区蜜桃av| 一级a爱视频在线免费观看| 老鸭窝网址在线观看| 97人妻天天添夜夜摸| 天天躁狠狠躁夜夜躁狠狠躁| 一边摸一边抽搐一进一小说| 久热爱精品视频在线9| 日韩av在线大香蕉| 曰老女人黄片| 亚洲成av片中文字幕在线观看| 1024视频免费在线观看| 757午夜福利合集在线观看| 满18在线观看网站| 激情在线观看视频在线高清| 色精品久久人妻99蜜桃| 亚洲一区中文字幕在线| 欧美成人性av电影在线观看| 亚洲色图av天堂| 免费人成视频x8x8入口观看| 欧美日韩av久久| 天堂中文最新版在线下载| 国产亚洲精品综合一区在线观看 | 国产xxxxx性猛交| 夜夜夜夜夜久久久久| 男女午夜视频在线观看| 久久精品国产99精品国产亚洲性色 | 国产精品永久免费网站| 国产免费av片在线观看野外av| 成人18禁在线播放| 国产一卡二卡三卡精品| 精品第一国产精品| 中文字幕人妻丝袜一区二区| 黄色怎么调成土黄色| 天堂√8在线中文| 国产亚洲精品一区二区www| 18禁裸乳无遮挡免费网站照片 | 老司机深夜福利视频在线观看| 国产精品偷伦视频观看了| 久久人人精品亚洲av| 丰满迷人的少妇在线观看| 叶爱在线成人免费视频播放| 一区二区三区激情视频| 欧美丝袜亚洲另类 | 久久精品亚洲av国产电影网| 无遮挡黄片免费观看| 久久久久久久久免费视频了| 一夜夜www| 不卡一级毛片| av网站在线播放免费| 黄色视频不卡| 九色亚洲精品在线播放| 免费在线观看亚洲国产| 国产精品免费一区二区三区在线| 美国免费a级毛片| 成人手机av| 亚洲第一av免费看| 欧美最黄视频在线播放免费 | 国产成+人综合+亚洲专区| 亚洲五月婷婷丁香| 亚洲国产毛片av蜜桃av| 亚洲 欧美一区二区三区| 国产精品久久久久久人妻精品电影| 18禁观看日本| 亚洲欧洲精品一区二区精品久久久| 大陆偷拍与自拍| 动漫黄色视频在线观看| 自拍欧美九色日韩亚洲蝌蚪91| 在线免费观看的www视频| 精品久久久久久久毛片微露脸| 久久国产精品影院| 久久久久久亚洲精品国产蜜桃av| 日本精品一区二区三区蜜桃| 在线十欧美十亚洲十日本专区| 一级作爱视频免费观看| 久热这里只有精品99| 9191精品国产免费久久| 青草久久国产| 久久狼人影院| 亚洲国产欧美网| 国产精华一区二区三区| 国产真人三级小视频在线观看| 丁香六月欧美| 在线观看午夜福利视频| 在线视频色国产色| 可以在线观看毛片的网站| 中亚洲国语对白在线视频| 国产野战对白在线观看| 久久青草综合色| 交换朋友夫妻互换小说| 亚洲成人久久性| 日本三级黄在线观看| 俄罗斯特黄特色一大片| 久久婷婷成人综合色麻豆| 日韩欧美在线二视频| 久久中文字幕人妻熟女| 老司机靠b影院| 黑人猛操日本美女一级片| 亚洲九九香蕉| 少妇粗大呻吟视频| 国产高清videossex| 免费女性裸体啪啪无遮挡网站| ponron亚洲| 欧美大码av| 最近最新中文字幕大全免费视频| 亚洲专区中文字幕在线| 国产高清videossex| 天堂中文最新版在线下载| 91字幕亚洲| 国产在线精品亚洲第一网站| 丝袜美腿诱惑在线| 悠悠久久av| 成人影院久久| 亚洲av第一区精品v没综合| 自线自在国产av| 黑人欧美特级aaaaaa片| 亚洲黑人精品在线| 国产亚洲精品第一综合不卡| 可以在线观看毛片的网站| 99riav亚洲国产免费| 亚洲国产看品久久| 韩国av一区二区三区四区| 99香蕉大伊视频|