Profile: Zhuji Qinwei Hydraulic & Pneumatic Components Co., Ltd. is a manufacturer of brass fittings, stainless steel fittings and air brake hose assemblies. Our products include slotted plugs, pipe fittings, brass fittings, compression fittings, and air brakes. We also offer nozzle fittings, and slip lock fittings. R Series nozzle fitting has fair resistance. It has working pressure from vacuum to 1000 psi.