Changmao Valve Group Co., Ltd., located in Xicun Town, Gongyi City, Henan Province, is a professional unit integrating R &D, manufacturing and sales of valve joints, pipeline equipment and related products. Founded in 1988, the company covers an area of 10000 square meters and has 80 employees. Annual output of 400000 sets of valve connector products. The company is founded on the basis of the former Gongyi Changmao water supply and drainage materials general factory and the former Sino-South Korean joint venture Hanan Changmao Yuanyi Valve Co., Ltd. Changmao company is a self-supporting import and export enterprise, exhibitor of Canton Fair, high-tech enterprise, ISO9001:2008 certification enterprise, and one of the top ten science and technology enterprises in Henan Province. The registered trademark "Changmao" brand is a famous brand in China.