China High Vacuum Pump manufacturers Quick Detail Place of Origin:Zhejiang, China (Mainland) Brand Name:TSVP Application:Air exhaust of refrigeration equipment,vacuum packing,vacuum forming... Fuel:Vacuum pump oil Color:Optional Packaging Details:Carton or Pallet Port:Ningbo Product Introduction 鈼廍quipped with gas ballast valve to pump a little water vapor. It can last service life of the oil...