... : Sliding, swing 6. Functions: fresh-keeping, freezing, quick-freezing, fire-proof, explosion-proof, air-conditioning are all available. 7.Refrigeration: R22, R404A, Polyol ... Secondary Refrigerant8.-5 °C ~ + 5 °C: Pre-Cooling, Keep Fresh,-10 °C ~ -20 °C: Freezer Storage-25 °C ~ -30 °C: Low ...