Cold room door Good -quality color steel or aluminum foil board, filled with high-density polyurethane. Polyurethane ... and manufacturing of various polyurethane color steel panel, widely used in house, freezing house, clean room, garage door, roof, wall, anti-fire, sound ... of the cold storage panel is 0.985m.* PU color steel cold storage panel systems (PU cold storage Panel) 1. Fire ...