Shanghai Zhengmao Valve Co., Ltd, founded in 1992, is a specialized valve enterprise devoted in design, casting, manufacture and sales. Its production base is located at Wuxing Industry Zone, Oubei town, Wenzhou, Zhejiang, China. The company covers over 30, 000 square meters and has 400 staffs, 80 senior engineers, engineers and professional technician. Possessing precise machinery processing facilities, valve processing lines and modern testing system and equipment, the company ensures the flexibility and stability of all products quality and has got ISO 9001 International Quality Certification, International AZ Security Certificate, CE and API certification, and acquired testing certificate of competency of National Machinery Ministry. All products of our company are up to standard of the related departments of city, province and nation.