O Ring, Oil Seal, Hydraulic Seal manufacturer / supplier in China, offering PTFE Screw Rubber Vacuum Suction Cup Dosing Pump Spare Parts PTFE Diaphragms Assembly Plate for Metering Pumps, Rbs High Pressure Metering Plunger Chemical Dosing Pumps Froy Series Hydraulic Diaphragm Metering Pump, GLS PVDF 316ss PP PVC Adjustable Mechanical Liquid Transfer Chemical Metering Electromagnetic Dosing Pump and so on.