Chongqing Zhongyuan Metallurgy Co.Ltd. was a comprehensive private enterprise established in 1994, combining science, technology and trade to develop, design and manufacture independently. In 2002 it gained trading rights with the approval of Foreign Trade and Economic Committee of People’s Republic of China. It consists of one wholy-owned company with indenpend business accounting and 7 holding companies, namely, Sichuan Liaoyuan Machinery Co. Ltd., Chongqing Zhongyuan Special Vehicles Co. Ltd., Chongqing Changjiang Chain Co. Ltd., Sichuan Jianghua Pump Co. Ltd., Chongqing Hongyan Electrical Appliance Co., Ltd., Chongqing Hongtao Materials and Equipment Co. Ltd. and Chongqing Yixiu Environmental and Sanitary Service Company.