On the basis of Gongyi Changmao Supplying and Draining of Water Materials Company, Sino-South Korea joint venture,Henan Changmao Yuanyi Co.,Ltd was founded in March,2003.It mainly produces rubber joint,valve,expansion piece,shock absorer and relevant products.

It is the company that has passed the certification of ISO 9001:2000 international system of quality control products has hundred series,thousand specifications, and 5 series of patent products.we have dependently import and export right,and the products have been exported to Japan, America, korea, Egypt, Spain, Vietnam and so on.

ISO9001:2000 international system of quality control enterprise
"Changmao" was awarded the famous brand in China
Advanced enterprise of exporting in 2005
Authorized by China Petroleum and Chemical Corporation
Member of China building metal structure association
Reaching the standard of agriculture department quality managing enterprise
Zhengzhou emphasising on contract and credit enterprise
Succeeding in the market by quality enterprise