Electric Butterfly Valve, Electric Ball Valve, Electric Control Valve manufacturer / supplier in China, offering Explosion-Proof Electric Ball Valve with Stainless Steel Exd II Bt4 Rating for Industrial Coal Processing & Cement Plants, Explosion-Proof Electric Ball Valve with Stainless Steel Emergency Shutdown Function and Manual Override for Critical Systems, ATEX Certified Explosion-Proof Electric Ball Valve with Stainless Steel Construction for Industrial Hazardous Area Zone 1 Applications and so on.