Laboratory Centrifuge, Laboratory Thermostatic Devices, Combination & Joint Fittings manufacturer / supplier in China, offering 3/4" DN20 Water Oil Gas Steam Economical Durable Two-Way Flow Manual Rotary Sluice Valve Threaded Brass Gate Valve, Pressure Relief Valve for Solar Water Heaters, OEM ODM Plumbing Materials Size Color Pn25 20-110mm Plastic Brass Thread Tee Elbow PPR Pipe Fittings and so on.