1.Polyurethane insulation sandwich panel 2.Cold storage room 2. PU panel room 3. CE 4.Temperature: -5 --40 1. Core material ... Keep Fresh,-10 °C ~ -20 °C: Freezer Storage-25 °C ~ -30 °C: Low Temperature Storage, Quick-Freeze-35 °C ~ -40 °C: Blast ... Reservoirs, Gas-Liquid Separator, Oil Separator, H/L Pressure Controller, Condensing Pressure Controller, liquid Sight Glass, Solenoid Valve, Filter, H/L ...