1.Polyurethane insulation sandwich panel 2.Cold storage room 2. PU panel room 3. CE 4.Temperature: -5 --40 1. Core ... , fire-proof, explosion-proof, air-conditioning are all available. 7.Refrigeration: R22, R404A, Polyol Secondary Refrigerant8.-5 °C ~ + 5 ... -30 °C: Low Temperature Storage, Quick-Freeze-35 °C ~ -40 °C: Blast Freezer, Quick-Freeze9. Equipment Configuration: Condenser, Reservoirs, Gas- ...