Tag: manual vacuum pump

  • China Good quality Mechanical Rotary Vane Vacuum Pumps Manual vacuum pump ac

    Product Description Product Description  Brief Description of vacuum pump liquid ring YH500 Diaphragm Vacuum Pump is a kind of variable volume type vacuum pump, and is a new type with excellent functions and high quality after improvement on the basis of learning merits and eliminating shortcoming of similar products at home and abroad. YH500 Diaphragm…