... swing 6. Functions: fresh-keeping, freezing, quick-freezing, fire-proof, explosion-proof, air-conditioning are all available. 7.Refrigeration: R22, R404A ... 20 °C: Freezer Storage-25 °C ~ -30 °C: Low Temperature Storage, Quick-Freeze-35 °C ~ -40 °C: Blast Freezer, ... Gas-Liquid Separator, Oil Separator, H/L Pressure Controller, Condensing Pressure Controller, liquid Sight Glass, Solenoid Valve, Filter, H ...