Vacuum Pump, Liquid Ring Vacuum Pumps, Vacuum Systems manufacturer / supplier in China, offering Single / Three Phase Oil-Sealed Rotary Vane Vacuum Pump for Biogas Purification System Wordfik Pvx25D 1mbar 20m³ /H 24m³ /H, Wordfik Pvx25D 20-24m³ /H Oil-Lubricated Rotary Vane Vacuum Pump for Glass Coating 220V 380V, Plastic Thermoforming Vacuum Pump Heat Resistance Oil-Sealed Rotary Vane Wordfik Pvx25D 0.75kw Save Energy and so on.