... 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 ... Dyeing, Weaving, Plastic Industry, Vacuum Pump's Merits:simple structure, small volume, high-speed extract speed, high vacuum capacity, energy-saving, can work ...