Electric Valves, Pneumatic Valves, Control Valve manufacturer / supplier in China, offering SS304 316L Stainless Steel Food Grade Ball Valve Sanitary Grade Weldeded Manual Three-Piece Ball Valve, SS304 316L Stainless Steel Food Grade Sanitary Welded Manual 3PC Encapsulated Ball Valve, Wenzhou Factory Sanitary Grade Manual Welded Three-Piece Ball Valve and so on.