Hangzhou Deling Electronic Commerce Co., Ltd. established since 2002 in Hangzhou, China, is a high technology company providing electronic commerce and online trading service . It’s main business is running large organizational e-commerce web sites in gas separation area. Existing web sites include China Gas Separation Plant website (http://www.cngspw.com/) and Hangzhou Machinery online shopping center (http://www.hzjdw.com/). The former website is also sponsored by General Machinery Gas Separation Equipment Association of China. It has successfully attracted the most of large companies related to gas separation plants in China, and has been the largest and sole e-commerce web site in gas separation equipment business in China.