Coupling, Valve Parts, Pump Parts manufacturer / supplier in China, offering Various Materials Nylon/Stainless Steel/Ductile Iron Grooved Flexible Coupling Clamp Pipe Fittings, Good Quality 600psi Medium Pressure Ductile Iron V-Ictaulic NSF Grooved Flexible Coupling for RO System, High Precision Stainless Steel Electronic Spare Parts Auto Electrical Machining Parts and so on.