On September 3, 2011, the 2011 Top 500 Chinese Enterprises Press Conference and the China Large Enterprise Summit were held in Chengdu. Weichai Holding Group Co., Ltd. has a 91.1 billion yuan operating income and ranks 93rd among the top 500 Chinese companies, which is 24 places higher than that of 2010. It ranks 35th among China's top 500 manufacturers and 14 places more than 2010. . This is the 10th time that the China Enterprise Confederation and the China Entrepreneurs Association have announced to the public the list of top 500 Chinese companies. According to comparative data, the entry threshold for the top 500 Chinese enterprises in 2011 increased from 11.08 billion yuan in 2010 to 14.19 billion yuan, an increase of 28.1%. Natural Gas Engine,Gas Engine,Lp Gas Engine Supermaly Generating Equipment Co., Ltd. , http://www.sdgenerating.com