Changyi Changrong Machinery Co., Ltd. a subsidiary of Changning Group, with more than 400 employees, including more than 50 professional and technical personnel. Committed to polymer concrete drains, cast iron grate, drainage parts, ground rainwater collection system and other products. In the way of continued investment in science, technology and the development of new product, market continues to expand. Our products sold in domestic market also be exported to German, Italy, Spain, New Zealand, the United States, Australia and so on. In the strong support and concerted efforts of all staff and customers, the company got the ISO9001: 2000 certification in 2001, also be identified "Weifang Municipal Enterprise Technology Center" in October 2009. The performance of our polymer concrete channel is much better than domestic cement channel, our products have been successfully applied in 2008 Beijing Olympic Games Bird's Nest and 'The Water Cube, the 2010 World Expo in Shanghai, Shanghai Hongqiao Airport, Guangzhou railway station and some other places. The company's brand of "Chang Rong drainage" passed the APPLUS+ EN1433 test, successfully obtained the EU CE certification in November 2010, the certificate number is: 10SH200010013.