Polyurethane pir/pur/pu foam insulated sandwich panel for cold room/warehouse/workshop 1.Our PU sandwich panel has the following characteristics: light dead weight, high mechanical strength, excellent shearing resistant performance, strong corrosion resistance, high durability, and weather fastness, etc. 2. The sandwich panel has excellent insulating performance: heat insulation, sound insulation, waterproof performance, etc. 3. It is easy to install and can be used many times over. 4. Nowadays, the PU sandwich panel is widely used for cleaning workshops, industrial factory buildings, office buildings, stadiums, villas, and public buildings, etc.