Electric Butterfly Valve, Electric Ball Valve, Electric Control Valve manufacturer / supplier in China, offering Explosion-Proof Motorized Certified ATEX 24V DC Electric Actuator with Stainless Steel Housing for Oil Rig Safety Valves, Mining Safety ATEX Certified Explosion-Proof Actuator for Underground Ventilation Dampers, Multi-Turn Motorized Explosion-Proof Electric Control Valve Actuator with Harsh Environment Connectors and so on.