Diaphragm Valve, Compression Fitting, Tube Fitting manufacturer / supplier in China, offering 4500 Psig Pressure Reducing Valve Are Suitable for Nitrogen and Pharmaceutical Laboratories., 413bar One-Way Valve for Environmental and Heating Processes 6000 Psig, 3000psi Versatile Fixed Ball Valve for Gas in Hexagonal Shape, ASME B16.34 and so on.