Product Features: Centralized vacuum pumping, precise refrigeration dispensing and filling, and back pumping multi-function in one, high packing efficiency, no refrigerant loss; Refrigerant special pump with special tanker for American Henkel movement or refrigerant submersible pump developed by CSAIXI, no oil lubrication technology, common for various refrigerants; can be divided into refrigerants such as R22/R134A/R410A;