Vacuum Pump directly-connected mechanical sealed coat disposal inside the pump cavity. ISO9001:2000, ISO14001:2004, CE. Vacuum Pumpimpeller of the Vacuum Pump is made of excellent alloy copper,air inlet equipped with air valve.,the Vacuum Pump are widely used in Foodstuff,Medicine Package, Disinfectant, Printing, Dyeing, Weaving, Plastic Industry, Vacuum Pump's Merits:simple structure, small ...