Shanghai Zhenggang Valve Manufacturing Co., Ltd. is a high-tech innovative valve production enterprise that integrates design and research and development, manufacturing, testing, and sales services. Its products have gained the trust of a large number of users in the domestic market and are of high quality. In nearly ten years of practical operation, the company has always adhered to the business philosophy of "proactive progress, quality assurance, reputation first, and customer first", with customer satisfaction as the ultimate goal. At the same time, Zhenggang Company is also a member of China General Association, China Valve Association, China National Petroleum Corporation, designated manufacturer of Sinopec, recommended product unit for China Engineering Construction, and Shanghai High tech Enterprise. Zhenggang products have been widely used in industrial pipelines such as petroleum, chemical, mechanical, electrical, metallurgical, coal mining, food, pharmaceutical, military, urban pollution treatment, and urban construction. Zhenggang Company is located in the industrial park of Qingpu District, Shanghai, an international metropolis. The main design and manufacturing standards for its products include national standard GB/HG/JB, American standard API/ANSI, Japanese standard JIS, and German standard DIN; Various materials are used, including WCB (A216), WC6 (A217), CF8, CF8M, CF3, CF3M, LCB, LCC, LC3, and special materials; The main product categories include gate valves, ball valves, butterfly valves, globe valves, check valves, safety valves, regulating valves, pressure reducing valves, drain valves, needle valves, plunger valves, hydraulic control valves, power station valves, pneumatic valves, electric valves, flange fittings and other products.