Wafer Butterfly Valve, Flanged Butterfly Valve, Lug Type Butterfly Valve manufacturer / supplier in China, offering OEM ODM High-Performance Di DN1200 DN2000 Flange Butterfly Valve Used in Water Treatment, Oil & Gas, Chemical, High-Performance Stainless Steel DN50 Check Valve for Petrochemical Applications, Durable Industrial Pn10 Pn16 DN50 2 Inch Lug Type Buttertfly Valve and so on.