Ball Valves, Control Valves, Knife Gate Valves manufacturer / supplier in China, offering Pneumatic Knife Gate Valve for Mining/Slurry/Wastewater Automated for Chemical/Pulp & Paper Industries China Factory, Electric 3-Way Ball Valve 220V/380V, Auto Control, OEM Support, Fast Delivery for Chemical/Petroleum, Explosion-Proof, CE Certified China Factory, Pneumatic O-Type Ball Valve, PTFE Sealed, Zero Leakage, ISO 5211 Mounting and so on.