Knife Gate Valve, Ball Valve, Forged Steel Valve manufacturer / supplier in China, offering API/DIN/JIS Pneumatic Control Wcb 304 316 Diaphragm Type Fow Control Regulate Valve, API6d/DIN Cast Steel Carbon Steel Wcb 300lb 12 Inch Bellow Sealed Pneumatic Flange Bellow Globe Valve, ANSI Cast Steel Q41 PTFE Liner PVC Flange High Pressure Stainless Steel Wafer Ball Valve and so on.