1.Polyurethane insulation sandwich panel 2.Cold storage room 2. PU ... Temperature: -5 --40 1. Core material of panel: Polyurethane.2. Panel availiable thickness: 50mm,75mm,100mm,120mm,150mm,200mm ... 0.376mm, 0.426mm, 0.476mm, 0.526mm.5. Door types: Sliding, swing 6. Functions: fresh-keeping, freezing, ... , cold storage room/cold room for meat/seafood /Polyurethane cold storage/stailess steel cold room