... valvesProducts: We can produce gate, globe, check, ball and butterfly valves with the materials of ductile iron, carbon steel, alloy steel ... API, BS, DIN, JIS etc. We can offer special standard valves to our clients on your request.Certificates: We have held ... inspecttion equipments have been employed in Shanghai Huatong Valve Co., Ltd. Based on the first-class management and advanced production ...