Knife Gate Valve, Ball Valve, Forged Steel Valve manufacturer / supplier in China, offering API. DIN Stainless Steel Air Thread Reducing Valve Is Resistant to High Temperature Heat Conduction Oil Steam & Water Pressure Reduce Valve, DIN/API/GOST Wafer Pneumatic Steel Wcb 304 316 Electric High Pressure High Performance Flange Cast Iron Butterfly Valve, API/JIS/DIN Brass Bronze Industrial Aluminum Bronze Dual Plate Flange Lift Check Valve for Sea Water and so on.