Vacuum Components, Sanitary Fittings, Sanitary Valves manufacturer / supplier in China, offering OEM Kf SS304 Flange Stainless Steel Center Rings for Semi Conductor Industry, Stainless Steel Half Nipple Tube Butt Weld Stub Ferrule Vacuum Pipe Fitting, Custom Kf Short Flange Butt Weld Stub Stainless Steel Vacuum Half Nipple and so on.