Valve, Tube Fitting, Valve Manifold manufacturer / supplier in China, offering Hongji Type 1/4 3/8 1/2 Needle Valve 6000psi High Pressure Needle Valve, High Quality 1/4in Diaphragm Valve 316L High Pressure Diaphragm Shut-off Valve, Ultrahigh-Purity Diaphragm Valves Stainless Steel 316 1/4′′ Od Butt- Weld Diaphragm Valve and so on.