一、样本企业基本情况本文使用的调查数据由2012年世界银行“中国投资环境调查”(WBES)提供,此次调查采集的主要是截止到2011年底的企业层面相关数据[1]。与以往世界银行在中国进行的调查数据类似,2012年年度调查数据采集的方法依然采用的是分层随机抽样法,此轮调查中,世界银行对中国内地12个省份的25个城市[2]中11个制造业行业2000多家私营中小企业 First, the basic situation of sample companies The survey data used in this article by the World Bank in 2012, “China Investment Climate Survey” (WBES) to provide the survey collected mainly by the end of 2011 at the enterprise level data [1]. Similar to previous World Bank survey data in China, the method of collecting annual survey data in 2012 is still based on the stratified random sampling method. In this survey, the World Bank examined 25 cities in 12 provinces of Mainland China [2] More than 2,000 private SMEs in 11 manufacturing industries