Our company is specialized in knife gate valve, V-type ball valve, goggle valve, butterfly valve O-type valve, full-welded ball valve, semi-ball valve, gate headstock gear etc. over 90 series and 2800 specifications and types. They are widely used in automation control system of paper making, chemical fiber, petrochemical, foodstuff, metallurgy, electric power, petrochemical, sewage treatment and etc. Non-friction metal seal knife gate valves which are identified as the international advanced level, obtain twenty national patens.