Introduction: CM20A Multiple-Station Refrigerant Sub-Package System is for the application that transfer refrigerant from ISO TANK or 1000-400L tank to 12L-60L tank. It integrates functions of vacuum, recharge and and pumpback.Three stations can work simultaneously with high efficiency and accuracy. Main features: 1. Integrate functions of vacuum,filling,and pump-back-high efficiency and no refrigerant loss. 2. Use special booster oil-free compressor,can sub-package various refrigerants like R22/R134A/R410A etc. 3. Suitable for transferring refrigerants from ISO tank or 1000-400L tank to 12-60L cylinder. 4. Refrigerant filling completely,and auto-stop when the pressure of supply tank is up to -0.04Mpa. 5. Three working-station design,high filling efficiency. 6. Overall protection system,safe credible. 7. Filling accuracy is 0.5%.