Butterfly Valve, Gate Valve, Check Valve manufacturer / supplier in China, offering China Pn10/16 Ductile Iron Wcb Stainless Steel Cast Iron Wafer Butterfly Valve, Durable Industrial DN80 Soft Seat Di Ci PTFE PFA Wafer Butterfly Valve, API/ANSI/DIN/JIS/ASME DN100 Ductile Iron Cast Iron PTFE PFA Wafer Butterfly Valve and so on.