Chemical Pump, Ball Valve, Butterfly Valve manufacturer / supplier in China, offering D371xs 100% Virgin Pph Plastic Pph Resign Worm Wheel Butterfly Valve for Chemical Industry, High Pressure Pn16 Plastic Pph Resign Worm Wheel Industry Butterfly Valve for Chemical Industry, ANSI Sch80 Pph Worm Wheel Clamp Center Line Butterfly Valve and so on.