Shanghai Autotight Valve & Fitting Co., Ltd. is a professional and diversified valve manufacturer, specializing in ball valve, gate valve, globe valve, non-return valve, butterfly valve, pipe fitting, sanitary valve etc. Available in a wide range of sizes and materials, these valves are specifically designed for Chemical Industry, Stainless Industry, Medicines, Food, Science and Technology, environment-protection Industry. The area of factory building is more than 40,000M2. (the new factory ...