• <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 ?

    The Positive Role of Governance in the Way Environmental Policies Impact Technological Innovation

    2018-03-08 03:08:34LiShiqi
    學(xué)術(shù)界 2018年2期

    Li Shiqi

    (Nanjing University Business School,Nanjing Jiangsu 210093)

    Ⅰ.Introduction

    Since the Industrial Revolution,the global economy has been on rapid growth,and along with it came the high demand for resources.The industrial pollution that came after has severely damaged the environment and led to climate change.According to the report issued by World Meteorological Organization,2016 was the hottest year since 1880 when we first had our meteorological record.How to alleviate the pressure of resources and the environment and to achieve the sustainable development of the economy in the era of a global economic transformation has become a global agenda.Since the reform and opening up policy,China has maintained rapid economic growth,which,however,was at the cost of our environment and resources.Therefore,to protect the environment and to drive economic development through technological innovation is the only option for China if it is to grow sustainably.

    Environmental pollution is termed an externality in economics,which makes it crucial for the government to make proactive policies to solve pollution problem while maintaining fast economic growth.In 2002,China started a cap and trade pilot program on the emission of sulfur dioxide in four provinces including Shandong,Shanxi,Jiangsu and Henan,three cities including Shanghai,Tianjin and Liuzhou and a corporation,China Huaneng Group Co.,Ltd..In August,2010,China started a low-carbon pilot program in five provinces and eight cities.In October,2011,the NDRC (National Development and Reform Commission) issued Notice Regarding Carbon Trading Pilot Scheme to implement pilot carbon markets in seven cities and provinces including Beijing,Shanghai and Tianjin.However,the impact of environmental pollution is regional,so after environmental policies are made by the central government,it is up to local governments to implement them.These policies can also urge enterprises to start technological innovation to meet the requirement.Through technological innovation,corporations can not only reduce their costs of pollution management,but also raise their productivity and profits by developing new products and optimizing manufacturing process.〔1〕

    Through statistics and analysis,I proved that environmental policies and technological innovation have a negative correlation.However,after the introduction of governance,it turns into a positive correlation.This can be of help to local governments in China to drive technological innovation while implementing environmental policies.

    Ⅱ.Research Hypotheses

    1.The Relationship between Environmental Policies and Technological Innovation

    At present,due to the increasingly serious environmental pollution problems,the government has introduced environmental protection policies and expects to promote corporation technological innovation through environmental policies.The impact of the introduction and implementation of environmental policies on related technological innovation has always been a focus of study.There are mainly three views:(1) Environmental policies are conducive to technological innovation.Proper environmental regulation will stimulate enterprises to invest in technology,which can improve the production efficiency of enterprises and quality of products,thereby reducing their production costs.In this way,enterprises may gain a competitive advantage in the market and at the same time it is possible to promote technological innovation in the whole industry.〔2〕Hamamoto used expenditures on pollution control and R&D investments as two variables to study the relationship between environmental regulations and technological innovation in Japan and found that pollution control is an incentive for enterprises to make R&D investment.〔3〕(2) Environmental policies weaken competitiveness of enterprises and have a negative impact on technological innovation.The traditional neoclassical economic theory holds that while environmental policies can bring about an overall improvement in social welfare,they impose extra costs on enterprises,thus reducing the capability of enterprises to make technological innovation.Jaffe〔4〕did an empirical research on the relationship between environmental regulations and the competitiveness of enterprises.He believed that environmental regulations raise production costs and seriously weaken the ability of enterprises to make technological innovation.Brannlund〔5〕studied the pulp and paper industry of Sweden,found evidence more convincing than the study by Jaffe et al.and demonstrated that strict environmental regulations can have a negative impact on technological innovation of enterprises subject to the regulations.(3) The Porter Hypothesis disagrees with the view of Brannlund.At the same time,based on a series of rigorous premises,it holds that neither viewpoint is absolute.Chinese scholar Jiang Fuxin et al.studied 28 panel data from the manufacturing industry in Jiangsu province between 2004 and 2011.They used two-step GMM estimation and found that the curve modelling the relationship between environmental regulation and technological innovation was a U-shaped curve.〔6〕Li Yongyou,〔7〕Tu Zhengge〔8〕et al.proved that China’s current emissions trading scheme was not effective.

    To sum up,although there have been studies on the impact of environmental policies on technological innovation,no unanimous view has yet emerged.The second view mentioned above is more in line with the actual situation in China.Therefore,hypothesis 1 of this paper is that China’s current environmental regulations have a negative effect on technological innovation.

    2.The relationship between governance and technological innovation

    Since the term “innovation” was coined by Schumper,it has been regarded as a key driving force for an organization’s success and survival.However,compared to developed countries,China’s enterprises are generally not as enthusiastic about innovation or making investment in it.A popular explanation for this is that the government does not make much effort in urging enterprises to innovate.At the same time,the patent markets in different places are developing unevenly.The number of patent applications each year varies significantly from one region to another.In some places,the number of patent applications is on the rise while in others it has been sluggish for years.That is why local governments need to take responsibility and to encourage enterprises to innovate actively.The R&D investments enterprises not only make profits themselves,but also has a positive externality.The return a company receive from innovation,in either profits or any other forms will affect its motivation in innovating.Therefore,better governance can guarantee a good policy environment for companies and allow them to have high return from R&D investments,thereby encouraging them to make further innovation.In a word,how well the government governs determines what enterprises will do and how innovative they can be.Technologies,especially clean energy ones benefit the society more than it does to enterprises,which may discourage enterprises to invest in R&D,because their investments may not bring profits.In such cases,local governments need to take measures to stimulate innovation by raising their personal profits and social benefits.To that end,a common policy instrument is intellectual property protection.Research has proven both theoretically and empirically that intellectual property can significantly influence innovation.Intellectual property is also critical to developing countries to gain foreign expertise and investments and to boost domestic economy.〔9〕Based on this,hypothesis 2 is that local governance can encourage technological innovation.

    3.The government’s role in how environmental policies impact technological innovation

    In the last few decades,China has made extraordinary economic achievements.The cities that have seen the greatest economic growth all have local governments behind the curtain that virtually boost local economy.Despite that,some local governments do not effectively enforce the environmental policies introduced by the central government.This may be because local governments lag behind in terms of shifting their working focus.Moreover,different places have different environmental problems,so local governments also act differently.If local governments do not impose enough restrictions on pollutant emissions,enterprises will rather choose to pay for emissions (which is less costly) than invest in innovation.Therefore,So local governments play an important role in implementing environmental policies,and how they do that will impact the effectiveness of these policies directly.To sum up,if local governments can effectively implement environmental policies introduced by the central government,improve their capacity to govern,protect intellectual property rights,strictly enforce laws,provide enterprises with quality public services,create business environment and lower external uncertainties for businesses,enterprises will work on innovation that can help reduce emissions or improve energy efficiency.Therefore,hypothesis 3 is that governance plays a positive role in how environmental policies impact technological innovation.

    Ⅲ.Research Method

    1.Variables and data

    This paper is an empirical study based on data from 30 provinces in China between 2008 and 2014.(Due to lack of accessibility,Tibet is not included in this study.) Most data is from China Statistical Yearbook,Marketization Index of China’s Provinces and National Bureau of Statistics of China (NBS) or collected and calculated by me based on initial data from the NBS.Variables include number of authorized patents,intensity of environmental regulation,and governance capacity of the government,human resources,local economy and openness.

    (1)Technological innovation (PATENT)

    Technological innovation usually refers to innovation in products and production methods.Innovation in products means putting new products into business operation,the design or functions of which can bring new or better user experience.Innovation in production methods refers to the adoption of new or improved production methods.〔10〕Researchers often measure the level of innovation using two indicators:the number of authorized patents and expenditure in R&D.Considering that an innovation ends up as a new patent in most cases,this paper takes the number of patents to measure the level of technological innovation.I have referred to the international classification guideline of renewable energy patents that Johnstone (2009) published.By searching patents in the database of China’s State Intellectual Property Office (SIPO),I have collected renewable energy patent statistics and tried to relate clean energy innovation to regulations and governance.But this attempt was a failure.This may be attributed to the fact that China’s clean energy industry is at an early stage and enterprises do not invest much in the R&D of clean energy.The market is not mature enough.

    (2)Environmental regulation (ER)

    Gray〔11〕measured the intensity of environmental regulation by the ratio of pollution control investment to the total cost or output value of a company.Low〔12〕created the concept “green index”,which refers to the number of environmental policies and rules a local government enacts,to measure the intensity of environmental regulation.Levinson (1996) measured the intensity of environmental regulation with the revenue from sewage charges of a government.Antweiler et al.(2001)〔13〕adopted per capita GDP as a proxy for environmental regulation,believing that as people’s income rises,environmental regulation also becomes stricter.Cole and Elliott〔14〕(2003)measured the intensity of environmental regulation with the density of discharged pollutants.Chinese researchers based their studies more often on the costs and expenditure of a government when in implementing environmental policies.Because of different production scales in different regions,the same cost in pollution control may bring different social return.Therefore,researchers must consider the difference of production scales in different regions when measuring the intensity of environmental regulation.This paper divides the operating costs of wastes treatment facilities by year-end employment to exclude the influence of production scales and uses this figure to measure the intensity of environmental regulation.In order to compare data from different years,the data from 1978 are used as benchmark.

    (3)Governance (GOVERN)

    Due to the difficulty in measuring how well a government governs,this paper referred to the research of Fan et al.〔15〕(2001) and adopted an index demonstrating the relationship between the government and the market in Wang Xiaolu et al.’s (2011) Marketization Index of China’s Provinces.This paper used the reciprocal of this index as a proxy for the quality of governance.The larger the reciprocal is,the better the government governs.

    (4)Human capital (EDUC)

    Human capital is essential for technological innovation.Technological innovation is not only an indicator for the creativeness of technicians,but also measures the innovativeness and economic potential of a region.This paper adopts average years of schooling to measure human resources.Primary school,secondary school,high school and college as the highest level of education take 6,9,12 and 16 years respectively.EDUC in this paper is the result of years of schooling multiplied by each population group,divided by sample population.

    (5)Local economy (GDP)

    This paper uses GDP to measure the economy of a region.The GDP in 1978 is used as the benchmark.

    (6)Openness

    The openness of a region can also influence its technological innovation.Competition from abroad encourages local enterprises to cut costs by innovating.This paper refers to the research method of Liu Jinlin〔16〕et al.Openness is measured by the ratio of the total import and export of goods according to the destination and country of origin to the number of employees at the end of the year in each region.

    2.Research model

    In order to examine the hypothesis proposed in the previous section,this paper constructs three basic panel data models based on C-D production function.In order to reduce the volatility caused by different data units and the multicollinearity between the variables and the heteroscedasticity of the equations,I take the natural logarithm of all the variables to ensure the accuracy of the results.“i” stands for region,and “t” stands for time.

    Model 1:The Relationship Model between Technological Innovation and Environmental Regulation

    lnPATENTi,t=β0+β1lnERi,t+β2lnEDUCi,t+β3lnGDPi,t+β4lnOPENNESSi,t+εi,t

    Model 2:The Relationship Model between Technological Innovation and Governance

    lnPATENTi,t=β0+β1lnGOVERNi,t+β2lnEDUCi,t+β3lnGDPi,t+β4lnOPENNESSi,t+εi,t

    Model 3:The Relationship Model between Technological Innovation,Environmental Regulation and Governance

    lnPATENTi,t=β0+β1lnERi,t+β2ln(ERi,t×GOVERNi,t)+β3lnEDUCi,t+β_4lnGDPi,t+β5lnOPENNESSi,t+εi,t

    Ⅳ.Empirical analysis result

    Due to the lag effect of environmental regulation and local governance on technological innovation,this paper examines the impact regulation and local governance on the number of patents in the current period and lagged period.All controlled variables are the same as explanatory variables to avoid endogenous problems.Our analysis tool is Stata12.0.

    1.Panel unit root test

    False regression may occur if data is not stable.Therefore,it is necessary to conduct a unit root test before regression to ensure the credibility of the result.Root test methods are LLC,ADF-Fisher,PP-Fisher,IPS.To take a traditional approach,this paper uses two panel data unit root test methods,namely the LLC test under the same root condition and the IPS test under different root conditions.If unit root in is rejected in both tests,the data is stable.Test result is in Table 1.It can be seen that all variable sequences are stationary sequences,so now we can move to regression analysis.

    Table1ResultofPanelDataUnitRootTest

    Note:Variables at the level of 1%,5%,10% are marked with ***,**,* respectively.Probability is given in brackets.

    2.Empirical analysis of environmental regulation,governance and technological innovation

    This paper analyzes panel data from 30 provincial-level administrative divisions in China between 2008 and 2014 to find out the role of local governance in how environmental regulations impact technological innovation.The results are presented in Table 2.This paper uses fixed effect model to analyze for Hausman test.

    (1)The result of empirical analysis of environmental regulation,governance and technological innovation

    It can be concluded from Table 2 that environmental regulation is negatively correlated with technological innovation,which backs our hypothesis.This happens probably because the cost of production will increase due to regulations.On seeing this,some enterprises will invest in pollution control rather than innovation.In China,although the central government has paid attention to environmental regulations,local governments haven’t implemented them well.Also,under the current regulation,enterprises do not have to pay too much price for polluting the environment,which emboldens short-sighted enterprises to invest in cutting emission instead of in innovation,which is high-risk yet more beneficial in the long run.However,the elasticity of the current period is -0.073 while the lagged one is -0.061,which means that the negative impact of environmental regulation will wear off in the long run and turn beneficial to innovation in the end.

    Controlled variables such as EDUC,openness and GDP are facilitators of technological innovation.In the era of knowledge economy,human capital is an indispensable factor for an enterprise to improve its technological innovation,which is illustrated by the fact that its elasticity value is the highest of all variables.More talent and investment in R&D are needed to fuel innovation,whether it is a local innovation or an introduced one.Talent determines the result of innovation.The higher the level of human capital and the capability to absorb new technologies,the more likely an enterprise is to innovate further through introduced technologies.Chinese enterprises are innovating by themselves as it stands,but imitating and introducing technologies from overseas companies are also effective ways to promote their technologies.The level of regional development is another factor that determines technological innovation because the more developed a region is,the more it can invest in R&D.The same applies to openness.An open environment will provide enterprises with more choices of overseas technologies that they can absorb.Moreover,openness brings more competition in local regions,which means enterprises will have to innovate their technologies to lower the cost of production.

    Table2Resultofempiricalresearch

    Note:T value is significant at the level of 1%,5%,10% when marked with ***,**,* respectively.T statistic is given in brackets.

    The result of the regression analysis (Model 2) supports Hypothesis 2.The degree of governance is positively correlated with technological innovation,which means that China is still in a catch-up stage.Technological innovation in China calls for government support and an effective market that allows full competition.This suggests that the higher the quality of local governance is,the more local enterprises will invest in technological innovation.In this way,local enterprises will focus on long-term development and pay attention to technological innovation instead of finding a quick fix to reduce pollution.As investment in R&D increases,these enterprises will be more enthusiastic in technological innovation because it is the only way to lower their cost of production.It can be seen from Model 2 that like governance,all other controlled variables have the same positive correlation with technological innovation.

    (2)Governance can play a role between environmental regulations and technological innovation

    According to Model 3,the coefficients of cross-items of “environmental regulation” and “governance” are positive on a national scale.This indicates that governance plays a positive role in how environmental policies impact technological innovation.Better governance will ensure that policies won’t become a barrier to technological innovation,and this supports Hypothesis 3.Technology innovation has strong externalities and is likely to face market failures,which means that it cannot rely solely on market mechanisms to allocate resources,and this is where governance has its role.To be specific,on one hand,enterprises usually have to check the central environmental regulation policy and market demand to form its own innovation strategy,while local government’s job is to implement these policies to reduce pollution and protect the environment.On the other hand,enterprises lack motivation because they need to spend money on both pollution control and innovation.Also,individuals are not interested in technological innovation because there is no incentive for them.Local governments should incentivize enterprises through subsidies to encourage innovation.Other controlled variables in Model 3 have similar results with those in Model 1.

    3.Robustness test

    In order to verify the robustness of the model,the legal environment system index (IP) is added as another variable because the level of marketization in different places will influence government intervention in enterprises.All data is from the Marketization Index Report of China,and IP constitutes 3 aspects-- the maturity of intermediary organizations (such as market lawyers,the maintenance of the legal environment and intellectual property protection.

    Model 4

    lnPatenti,t+1=β0+β1lnERi,t+β2lnEDUCi,t+β3lnGDPi,t+β4lnOPENNESSi,t+β5lnIPi,t+εi,t

    Model 5

    lnPatenti,t+1=β0+β1lnGOVERNi,t+β2lnEDUCi,t+β3lnGDPi,t+β4lnOPENNESSi,t+β5lnIPi,t+εi,t

    Model 6

    lnPatenti,t+1=β0+β1lnERi,t+β2ln(ERi,t×GOVERNi,t)+β3lnEDUCi,t+β4lnGDPi,t+β5lnOPENNESSi,t+β6lnIPi,t+εi,t

    Table 3 is the result.From Table 3,it can be concluded that environmental regulations have a negative impact on technological innovation while regulations under government intervention has a positive one.IP law is a facilitator of innovation because innovation often comes from high-risk and long-term projects that costs large sums of money and human capital.Given the fact that the product of innovation is often intangible and vulnerable to plagiarism,progress in legal protection will encourage more innovation.Therefore,local governments should formulate policies based on local development and establish an IP protection system to clear the way for local innovation.A good legal system and an IP protection system will safeguard innovation against plagiarism.If innovative individuals and enterprises are rewarded with what is worth their investment,they will be motivated to innovate more.The new normal of China’s economic growth is that it is slowing down with its driving force changing in a structural reform.With this in mind,IP is bound to play an important role in promoting innovation as well as in transforming intangible scientific and technological achievements into real productivity.The lagged value of the IP index declines more rapidly than the current value,which indicates that the legal environment benefits technological innovation more in the current period.

    Table3Resultofrobustnesstest

    Ⅴ.Conclusion

    To discuss the relationship between environmental regulations and technological innovation,governance is a factor that we need to take into consideration.In this paper,statistics is analyzed to check how governance can change the way environmental policies impact technological innovation.It is found in the result that governance plays a positive role in how environmental policies impact technological innovation,and the way local governments implement national policies matters significantly.In view of this finding,here are some suggestions for governance.

    First,China should consolidate its resources and environmental protection regulations to promote technological innovation.According to statistics,although environmental regulation is negatively correlated with technological innovation,its negative effects wear off in the long run.Subsidy for environmental innovation has not yet spurred innovation,so we must further develop our environmental protection system and raise our environmental standards.We need to push forward market-based environmental policy reform,achieve pollution control objectives and encourage technological innovation.

    Second,we need to streamline the administration and delegate real powers to lower levels to improve the quality of governance.According to statistics,better governance quality will lead to more innovation.Streamlining the administration is not equal to taking no responsibility.It is about cutting red tapes and providing better service.Also,the coordination among the central and local governments as well as the one between different departments is of same importance.Sometimes policies do not have intended effects just because one part of the coordination chain is broken.At the same time,the Ministry of Environmental Protection should strengthen law enforcement and crack down on environmental violations.Enterprises should be encouraged to invest in R&D and clean energy.Local governments should see to it that all social entities bear legal liability if it violates any environmental regulations.

    Third,we need an environmental assessment mechanism led by local governments.Local governments should implement the environmental policies and make local development strategy that is suitable for its own to provide an innovation platform for local enterprises.We need a whole management system to maintain market order,protect intellectual property rights and encourage innovation.Communication between government and enterprises should be strengthened to pool resources,exchange technical information and provide services.We must support the development of high-end,deep-processing,high tech,high- added-value and environmentally friendly industries.By increasing investment in R&D,we can breed new technologies and new products that have an edge in the international market to export more high-tech,clean,capital-intensive and technology-intensive products.〔17〕

    Fourth,more talent should be introduced and trained to improve human capital.According to statistics,the level of human capital is always a major facilitator in technological innovation in any circumstances,and as society progresses,it will be of greater importance.Therefore,local governments should encourage the introduction of talent and offer more professional training projects.Enterprises should also be encouraged to cultivate talent and maintain their innovative vitality to guarantee the sustainable development of the economy.

    〔1〕Zhao Hong,The impact of environmental policies on industrial technological innovation:an empirical analysis based on panel data from China, Industrial Economics Research,2008(3).

    〔2〕Porter,M.E., America’s Green Strategy,Scientific American,1991.

    〔3〕Xie Maohua,Wang Jin,Liu Dongmei,Environment Regulation,Technological Innovation and Corporate Performance, Nankai Business Review,2014(12).

    〔4〕Jaffe Adam B.,Robert N.,Stavins.Dynamic Incentives of Environmental Regulations:The Effects of Alternative Policy Instruments on Technology Diffusion, Journal of Environmental Economics and Management,1995(29).

    〔5〕Brannlund,R.,Fre,R.,Grosskopf,S.,Environmental Regulation and Profitability:An Application to Swedish Pulp and Paper Mills, Environmental and Resource Economics,1995(6).

    〔6〕Jiang Fuxin,Wang Zhujun,Bai Junhong,The Dual Effect of Environmental regulation’ Impact on Innovation — An Empirical Study Based on Dynamic Panel Data of Jiangsu Manufacturing, China Industrial Economics,2013(7).

    〔7〕Li Yongyou,Shen Kunrong,How Successful Is China’s Pollution Control? — An Empirical Analysis Based on Provincial Industrial Pollution Data, Management World,2008(7).

    〔8〕Tu Zhengge,Shen Renjun,Can Emissions Trading Scheme Achieve the Porter Effect in China? Economic Research Journal,2015(7).

    〔9〕Shi Yupeng,Gu Quanlin,Protection of Intellectual Property Rights,Heterogeneous Firms and Innovation:Proof from Chinese Manufacturing Industry, Journal of Financial Research,2013(8).

    〔10〕An Tongliang,Wang Wenyi,Wei Wei,Technological Innovation in Chinese Manufacturing Enterprises:Modes,Incentives and Obstacles — An Empirical Analysis Based on a Survey of Jiangsu Manufacturing Enterprises.

    〔11〕Gray,W.B.,Shadbegian,R.J.,Pollution abatement cost,regulation,and plant-level productivity,Working Paper,National Bureau of Economic Research,Cambridge,Mass,1995.

    〔12〕Low,P.,A.Yeats,Do “Dirty” Industries Migrate, International Trade and the Environment,1992(159).

    〔13〕Antweiler,W.,Copeland,B.R.,Taylor,M.S.,Is Free Trade Good for the Environment, American Economic Review,2001(4).

    〔14〕Cole M.A.,R.J.R.Elliott,Determining the Trade Environment Composition Effect:The Role of Capital,Labor and Environment Regulation, Journal of Environmental Economic and Management,2003(46).

    〔15〕Fan J P H,Wei K C J,Xu X.,Corporate finance and governance in emerging markets:A selective review and an agenda for future research, Journal of Corporate Finance,2011,17,(2).

    〔16〕Liu Jinlin,Ran Maosheng,An analysis of environmental regulation influence on production technological progress of industry, Science Research Management,2015(2).

    〔17〕Fan Qunlin,Shao Yunfei,Tang Xiaowo,The impact of environmental policy,technological progress,and market structure on environmental technology innovation, Science Research Management,2013(6).

    亚洲国产毛片av蜜桃av| 一本大道久久a久久精品| a级毛片在线看网站| 亚洲性久久影院| 99久国产av精品国产电影| 色哟哟·www| 少妇被粗大猛烈的视频| 亚洲第一区二区三区不卡| 久久av网站| 丝袜喷水一区| 免费少妇av软件| 亚洲国产成人一精品久久久| 亚洲人与动物交配视频| 激情五月婷婷亚洲| 亚洲精品,欧美精品| 免费观看av网站的网址| 亚洲三级黄色毛片| 一级黄片播放器| 中文字幕av电影在线播放| 爱豆传媒免费全集在线观看| 国产熟女欧美一区二区| 中国美白少妇内射xxxbb| 丁香六月天网| 麻豆成人午夜福利视频| 成人国产麻豆网| 男女啪啪激烈高潮av片| av在线老鸭窝| 精品卡一卡二卡四卡免费| 国产黄色免费在线视频| 一级爰片在线观看| 午夜激情福利司机影院| 久久6这里有精品| 国产精品三级大全| 哪个播放器可以免费观看大片| 中文欧美无线码| 午夜日本视频在线| 中文天堂在线官网| 看免费成人av毛片| 少妇的逼水好多| 日本91视频免费播放| 青春草国产在线视频| 婷婷色综合www| 久久精品久久精品一区二区三区| 一级片'在线观看视频| 国产一区二区在线观看日韩| 午夜福利网站1000一区二区三区| 99国产精品免费福利视频| 国产日韩欧美亚洲二区| 极品教师在线视频| 国产淫片久久久久久久久| 国产黄片视频在线免费观看| 大片电影免费在线观看免费| 视频区图区小说| 自拍偷自拍亚洲精品老妇| 色94色欧美一区二区| 黄色日韩在线| 国产日韩欧美亚洲二区| 国产片特级美女逼逼视频| 少妇猛男粗大的猛烈进出视频| 夫妻午夜视频| 七月丁香在线播放| 91aial.com中文字幕在线观看| 免费观看av网站的网址| 伦理电影大哥的女人| 欧美高清成人免费视频www| 日日啪夜夜爽| 韩国高清视频一区二区三区| 老司机亚洲免费影院| 91在线精品国自产拍蜜月| 2018国产大陆天天弄谢| av福利片在线| 亚洲精品视频女| av.在线天堂| 黄色配什么色好看| 欧美变态另类bdsm刘玥| 免费黄频网站在线观看国产| 免费看日本二区| 欧美 亚洲 国产 日韩一| 色视频在线一区二区三区| 噜噜噜噜噜久久久久久91| 久久人人爽人人爽人人片va| 日本vs欧美在线观看视频 | 五月玫瑰六月丁香| 国产精品人妻久久久影院| 亚洲av国产av综合av卡| 欧美三级亚洲精品| 黄色配什么色好看| a级片在线免费高清观看视频| 亚洲av成人精品一区久久| 免费黄网站久久成人精品| 免费看av在线观看网站| a级毛色黄片| 国产无遮挡羞羞视频在线观看| 欧美xxxx性猛交bbbb| 人妻少妇偷人精品九色| 亚洲四区av| 国内精品宾馆在线| 一区二区三区乱码不卡18| 91精品国产国语对白视频| 久久影院123| 日韩强制内射视频| 一本色道久久久久久精品综合| 人人妻人人澡人人看| 国产精品一区二区三区四区免费观看| a级片在线免费高清观看视频| 亚洲无线观看免费| 亚洲性久久影院| 亚洲经典国产精华液单| 人妻制服诱惑在线中文字幕| 国产在线免费精品| 国产成人精品福利久久| 亚洲av二区三区四区| 久久精品国产亚洲av涩爱| 欧美激情极品国产一区二区三区 | 免费av中文字幕在线| 精品一区在线观看国产| 亚洲精品日韩av片在线观看| 久久热精品热| 欧美三级亚洲精品| 大香蕉久久网| 亚洲中文av在线| 大陆偷拍与自拍| 人妻一区二区av| 免费看光身美女| 十八禁网站网址无遮挡 | 91午夜精品亚洲一区二区三区| a级毛片在线看网站| 22中文网久久字幕| 亚洲av国产av综合av卡| 久久国产乱子免费精品| 日日啪夜夜撸| 亚洲精品久久久久久婷婷小说| 人妻制服诱惑在线中文字幕| 久久av网站| 久久这里有精品视频免费| 国产在线一区二区三区精| 18禁动态无遮挡网站| 国产视频内射| 国产精品熟女久久久久浪| 久久人人爽人人爽人人片va| 婷婷色综合大香蕉| av在线观看视频网站免费| 如日韩欧美国产精品一区二区三区 | 久久这里有精品视频免费| 精品久久久久久久久亚洲| 国产有黄有色有爽视频| 久久久久久久久久成人| 在线播放无遮挡| 亚洲中文av在线| 亚洲国产精品一区二区三区在线| 中文字幕人妻丝袜制服| 日韩人妻高清精品专区| 国产精品无大码| 国内揄拍国产精品人妻在线| 亚洲自偷自拍三级| 欧美国产精品一级二级三级 | 久久久久网色| 欧美日韩国产mv在线观看视频| 王馨瑶露胸无遮挡在线观看| 国内精品宾馆在线| 国产精品国产三级国产专区5o| 亚洲精品国产av蜜桃| 亚洲精品一区蜜桃| 少妇精品久久久久久久| videos熟女内射| 国产一区有黄有色的免费视频| 精品一区二区三卡| 久久久欧美国产精品| kizo精华| 伊人亚洲综合成人网| 婷婷色麻豆天堂久久| 91aial.com中文字幕在线观看| 欧美日韩精品成人综合77777| 桃花免费在线播放| 国产高清有码在线观看视频| 热99国产精品久久久久久7| 内地一区二区视频在线| 午夜视频国产福利| 国产伦理片在线播放av一区| av有码第一页| 日本免费在线观看一区| 亚洲激情五月婷婷啪啪| 91aial.com中文字幕在线观看| 欧美bdsm另类| 国产成人精品婷婷| 五月玫瑰六月丁香| 欧美少妇被猛烈插入视频| 在线观看美女被高潮喷水网站| 日本av手机在线免费观看| 偷拍熟女少妇极品色| 啦啦啦中文免费视频观看日本| 精品卡一卡二卡四卡免费| 在线 av 中文字幕| 性色av一级| 18禁动态无遮挡网站| 中文在线观看免费www的网站| 黄色欧美视频在线观看| 欧美高清成人免费视频www| 成人免费观看视频高清| 三级国产精品欧美在线观看| 汤姆久久久久久久影院中文字幕| 亚洲天堂av无毛| 免费不卡的大黄色大毛片视频在线观看| √禁漫天堂资源中文www| 午夜福利视频精品| 亚洲成人一二三区av| 中文字幕免费在线视频6| 亚洲精品456在线播放app| 亚洲av不卡在线观看| 涩涩av久久男人的天堂| 久久久国产欧美日韩av| 少妇精品久久久久久久| 亚洲在久久综合| 国产有黄有色有爽视频| 免费观看a级毛片全部| 亚洲欧美精品专区久久| 欧美日韩在线观看h| 十分钟在线观看高清视频www | 男人舔奶头视频| 哪个播放器可以免费观看大片| 哪个播放器可以免费观看大片| 亚洲国产精品专区欧美| 精品久久国产蜜桃| 成人18禁高潮啪啪吃奶动态图 | 中文资源天堂在线| 青春草视频在线免费观看| 亚洲第一av免费看| 精品人妻熟女毛片av久久网站| 看免费成人av毛片| 99久久精品一区二区三区| 午夜免费男女啪啪视频观看| 永久网站在线| 中文字幕人妻熟人妻熟丝袜美| 国产免费又黄又爽又色| 日韩,欧美,国产一区二区三区| 男女免费视频国产| 久久99蜜桃精品久久| 亚洲国产精品成人久久小说| 一级毛片我不卡| 国产精品久久久久久精品电影小说| 水蜜桃什么品种好| 欧美 日韩 精品 国产| 一个人免费看片子| 赤兔流量卡办理| 永久网站在线| 欧美亚洲 丝袜 人妻 在线| 亚洲av成人精品一二三区| 有码 亚洲区| 亚洲婷婷狠狠爱综合网| 亚洲欧美日韩另类电影网站| 午夜精品国产一区二区电影| 国产色婷婷99| 免费大片黄手机在线观看| av网站免费在线观看视频| 国产精品无大码| 尾随美女入室| 精品亚洲成a人片在线观看| 高清在线视频一区二区三区| 黄色欧美视频在线观看| 国产欧美亚洲国产| 亚洲精品aⅴ在线观看| av免费观看日本| 又粗又硬又长又爽又黄的视频| 日本爱情动作片www.在线观看| 成年人午夜在线观看视频| 99热这里只有精品一区| 蜜桃在线观看..| 老司机影院毛片| 国产午夜精品久久久久久一区二区三区| 亚洲欧洲精品一区二区精品久久久 | 亚洲第一区二区三区不卡| 欧美精品人与动牲交sv欧美| 五月伊人婷婷丁香| 久久久久久久精品精品| 热re99久久精品国产66热6| 国产午夜精品一二区理论片| 国产黄片美女视频| 黄片无遮挡物在线观看| 亚洲av.av天堂| 久久精品久久精品一区二区三区| 99热全是精品| 又黄又爽又刺激的免费视频.| 看免费成人av毛片| 日产精品乱码卡一卡2卡三| 国产精品国产三级国产av玫瑰| 免费大片18禁| 国产淫片久久久久久久久| 亚洲不卡免费看| 人人妻人人看人人澡| 欧美区成人在线视频| 深夜a级毛片| 狂野欧美激情性xxxx在线观看| 国产精品久久久久久av不卡| 日本黄色片子视频| 青春草视频在线免费观看| 一级毛片黄色毛片免费观看视频| 观看av在线不卡| 国产男女内射视频| 亚洲欧美中文字幕日韩二区| 曰老女人黄片| 纯流量卡能插随身wifi吗| 午夜视频国产福利| 午夜福利在线观看免费完整高清在| 中文欧美无线码| 青春草亚洲视频在线观看| 国产黄色视频一区二区在线观看| 中文在线观看免费www的网站| 国产精品人妻久久久久久| 我的老师免费观看完整版| 精品一区二区免费观看| 少妇裸体淫交视频免费看高清| 日韩 亚洲 欧美在线| 精品久久久噜噜| 美女脱内裤让男人舔精品视频| 日韩不卡一区二区三区视频在线| 我要看日韩黄色一级片| 下体分泌物呈黄色| videos熟女内射| 三级经典国产精品| 国产真实伦视频高清在线观看| 91久久精品国产一区二区三区| 在现免费观看毛片| av黄色大香蕉| 成年人免费黄色播放视频 | 亚洲美女黄色视频免费看| 97在线视频观看| 在现免费观看毛片| 九九爱精品视频在线观看| 在线精品无人区一区二区三| 亚洲精品乱码久久久久久按摩| av又黄又爽大尺度在线免费看| 少妇猛男粗大的猛烈进出视频| 中文字幕亚洲精品专区| 亚洲精华国产精华液的使用体验| 一级,二级,三级黄色视频| 中文精品一卡2卡3卡4更新| 夜夜骑夜夜射夜夜干| 欧美精品高潮呻吟av久久| 免费观看在线日韩| 国产视频首页在线观看| 国产无遮挡羞羞视频在线观看| 久久亚洲国产成人精品v| 亚洲第一区二区三区不卡| 精品久久久久久电影网| 久久精品国产亚洲av天美| 久久亚洲国产成人精品v| 亚洲国产av新网站| 免费观看无遮挡的男女| 中文字幕制服av| 99re6热这里在线精品视频| 最新中文字幕久久久久| 美女xxoo啪啪120秒动态图| 性色av一级| 91精品一卡2卡3卡4卡| 亚洲精品乱码久久久久久按摩| 亚洲精品国产色婷婷电影| 在线观看www视频免费| 国产精品国产av在线观看| 亚洲精品亚洲一区二区| 精品一区在线观看国产| 乱系列少妇在线播放| 国产精品国产av在线观看| 午夜日本视频在线| 狂野欧美激情性xxxx在线观看| 欧美日韩国产mv在线观看视频| 欧美成人午夜免费资源| 亚洲av二区三区四区| 欧美bdsm另类| 久久99热这里只频精品6学生| 国产视频内射| 久久毛片免费看一区二区三区| 国产黄频视频在线观看| 有码 亚洲区| 简卡轻食公司| 黄色欧美视频在线观看| 黄色日韩在线| 亚洲av.av天堂| 久久综合国产亚洲精品| 秋霞在线观看毛片| 日韩视频在线欧美| 夫妻性生交免费视频一级片| 五月伊人婷婷丁香| 精品少妇久久久久久888优播| av线在线观看网站| 色网站视频免费| 黑人高潮一二区| 丰满少妇做爰视频| av在线app专区| 国产成人精品久久久久久| 久久久久人妻精品一区果冻| 在线免费观看不下载黄p国产| 免费看不卡的av| 亚洲综合色惰| 人妻少妇偷人精品九色| 国产精品人妻久久久久久| 欧美日韩在线观看h| av在线播放精品| 精品99又大又爽又粗少妇毛片| 久久久国产精品麻豆| 色婷婷av一区二区三区视频| 午夜福利影视在线免费观看| 日韩视频在线欧美| 91午夜精品亚洲一区二区三区| av天堂久久9| 嘟嘟电影网在线观看| 国产精品一区二区在线观看99| 色吧在线观看| 丝袜脚勾引网站| 亚洲性久久影院| 久久久久精品久久久久真实原创| 午夜91福利影院| 久久狼人影院| 寂寞人妻少妇视频99o| 免费观看a级毛片全部| 午夜福利视频精品| 在线免费观看不下载黄p国产| 在线观看免费视频网站a站| 一区二区三区精品91| 久久国产亚洲av麻豆专区| 极品少妇高潮喷水抽搐| 两个人的视频大全免费| 久久久国产一区二区| 丰满饥渴人妻一区二区三| 人妻制服诱惑在线中文字幕| 99热网站在线观看| 亚洲国产色片| 亚洲,欧美,日韩| 国产伦精品一区二区三区视频9| 人妻人人澡人人爽人人| 亚洲丝袜综合中文字幕| 婷婷色麻豆天堂久久| av国产精品久久久久影院| 久久久a久久爽久久v久久| 天天躁夜夜躁狠狠久久av| 偷拍熟女少妇极品色| 免费黄网站久久成人精品| 国产成人精品久久久久久| 青春草亚洲视频在线观看| 免费黄网站久久成人精品| 日本-黄色视频高清免费观看| 国产永久视频网站| 亚洲内射少妇av| 晚上一个人看的免费电影| 波野结衣二区三区在线| 亚洲内射少妇av| 亚洲国产欧美日韩在线播放 | 大香蕉久久网| 久久久国产一区二区| 91精品国产九色| 国产成人精品久久久久久| 嫩草影院新地址| 久久国产精品男人的天堂亚洲 | 99热这里只有是精品在线观看| 九草在线视频观看| 欧美精品国产亚洲| 如何舔出高潮| 大话2 男鬼变身卡| 久久青草综合色| 精品一品国产午夜福利视频| 最新中文字幕久久久久| 男人爽女人下面视频在线观看| 国产精品一区二区三区四区免费观看| 日本猛色少妇xxxxx猛交久久| 美女福利国产在线| 人人妻人人爽人人添夜夜欢视频 | 欧美日韩国产mv在线观看视频| 少妇的逼水好多| 亚洲欧美成人综合另类久久久| 水蜜桃什么品种好| 亚洲欧美中文字幕日韩二区| 久久久久久久亚洲中文字幕| 亚洲熟女精品中文字幕| 少妇猛男粗大的猛烈进出视频| 免费观看在线日韩| 制服丝袜香蕉在线| 天美传媒精品一区二区| av专区在线播放| 久久久久久伊人网av| 中文字幕制服av| 欧美亚洲 丝袜 人妻 在线| 美女福利国产在线| 久久久久久久久久久免费av| 天美传媒精品一区二区| 亚洲美女搞黄在线观看| 亚洲一区二区三区欧美精品| 色婷婷久久久亚洲欧美| 久久国产精品大桥未久av | 91成人精品电影| 久久99一区二区三区| 日本爱情动作片www.在线观看| 久久国产精品男人的天堂亚洲 | 欧美 亚洲 国产 日韩一| 国产精品国产av在线观看| 亚洲无线观看免费| 五月玫瑰六月丁香| 99热这里只有精品一区| 亚洲精品,欧美精品| 在现免费观看毛片| 国产探花极品一区二区| 一级片'在线观看视频| 日日啪夜夜爽| 国产精品国产三级专区第一集| 99久久精品国产国产毛片| 精品久久久噜噜| 国产精品秋霞免费鲁丝片| 国产欧美日韩一区二区三区在线 | 亚洲国产欧美日韩在线播放 | 一本久久精品| 国产熟女欧美一区二区| 久久 成人 亚洲| 91精品一卡2卡3卡4卡| 最近最新中文字幕免费大全7| 嘟嘟电影网在线观看| 亚洲一区二区三区欧美精品| 老司机亚洲免费影院| 岛国毛片在线播放| 美女xxoo啪啪120秒动态图| 男人添女人高潮全过程视频| 一区二区av电影网| 亚洲精品456在线播放app| 精品人妻偷拍中文字幕| 毛片一级片免费看久久久久| 中国美白少妇内射xxxbb| 亚洲精品自拍成人| 亚洲精品日本国产第一区| 免费av不卡在线播放| 久久6这里有精品| 亚洲国产精品999| 高清av免费在线| 91成人精品电影| 草草在线视频免费看| 熟妇人妻不卡中文字幕| 亚洲精品,欧美精品| 97精品久久久久久久久久精品| 欧美三级亚洲精品| 一级毛片我不卡| 女人久久www免费人成看片| 在线观看美女被高潮喷水网站| 久热这里只有精品99| 最近最新中文字幕免费大全7| 欧美成人午夜免费资源| 欧美日韩精品成人综合77777| 欧美丝袜亚洲另类| 婷婷色麻豆天堂久久| 久久人人爽人人片av| 亚洲av中文av极速乱| 国产精品99久久99久久久不卡 | 国产亚洲一区二区精品| 这个男人来自地球电影免费观看 | 一本—道久久a久久精品蜜桃钙片| 久久精品国产鲁丝片午夜精品| 国内揄拍国产精品人妻在线| 免费看日本二区| 自拍偷自拍亚洲精品老妇| 久久久久国产精品人妻一区二区| 成人毛片a级毛片在线播放| 亚洲精品国产av成人精品| 色94色欧美一区二区| 啦啦啦中文免费视频观看日本| 日韩成人伦理影院| 国产国拍精品亚洲av在线观看| av在线老鸭窝| 一本—道久久a久久精品蜜桃钙片| 精品人妻一区二区三区麻豆| 成人国产av品久久久| 久久久久久人妻| 观看av在线不卡| 妹子高潮喷水视频| 亚洲真实伦在线观看| 久久久久国产精品人妻一区二区| 亚洲av中文av极速乱| 免费在线观看成人毛片| 日韩一本色道免费dvd| 在线免费观看不下载黄p国产| 亚洲美女黄色视频免费看| 三级国产精品片| 街头女战士在线观看网站| 麻豆精品久久久久久蜜桃| 国产精品福利在线免费观看| 高清黄色对白视频在线免费看 | 女人久久www免费人成看片| 一区二区三区四区激情视频| 精品少妇黑人巨大在线播放| 久久久久久久精品精品| 看免费成人av毛片| 成人无遮挡网站| 熟女电影av网| 99久国产av精品国产电影| 91久久精品电影网| 国产中年淑女户外野战色| 日韩av不卡免费在线播放| 国产中年淑女户外野战色| 这个男人来自地球电影免费观看 | 久久久久久伊人网av| 十八禁高潮呻吟视频 | 女的被弄到高潮叫床怎么办| 久久国产乱子免费精品| 丝袜在线中文字幕| 成人黄色视频免费在线看| 免费看日本二区| 少妇被粗大猛烈的视频| 免费黄网站久久成人精品| 亚洲国产精品专区欧美| 精品人妻一区二区三区麻豆| 十分钟在线观看高清视频www | www.av在线官网国产| 久久国产亚洲av麻豆专区| .国产精品久久| 亚洲欧美清纯卡通| 国产精品一区二区性色av| 夜夜骑夜夜射夜夜干| 肉色欧美久久久久久久蜜桃| 国产精品久久久久成人av| 纵有疾风起免费观看全集完整版| 国产精品99久久99久久久不卡 |