China DiChao (ShangHai) Industry Co.,Ltd. located in Shanghai, the company own several joint venture factories that specialized in manufacturing sanitary ware, automatic air vents, watts air vents, valves, parts for pipe, parts for gas and natural gas.The main material include stainless steel, carbon steel, cast iron, bronze, brass, aluminum, zinc, plastic and so on. We have the global product certificates. You will consider us as your ideal cooperator with our good quality products, automatic air vents, watts air vents, automatic valve, automatic drain valve, automatic water valve, brass safety valve, air vent valve, excellent service, principle of good faith, mutual benefit cooperation.