Stainless Steel Ball Valve, Butterfly Valve, Fitting manufacturer / supplier in China, offering Sanitary Stainless Steel SS316L SS304 Pneumatic Butterfly Valve, SS304 Stainless Steel Blow-Down Gate Valve for Industrial Use, 1/8" Mf Mini Ball Valve 1/2 Stainless Steel NPT Threaded Mini Ball Valve and so on.