1. Product name:vacuum pump 2. Delivery:10days 3. Phase:3 4. Certificate: CE 5. Applicarion:Air Blower Application Scope ... cultivation, paper cutter,screen printer,injection molding machine,vacuum packaging,delivery of paper,fluid delivery, dry ... Working Principal:Vane wheel is roatted in the pump chamber by principle is side channel, with air ... finally discharged through exhaust groove. vacuum pump