... polyurethane foam sandwich panel 1.Easy installation, 2.Fireproof, 3.Waterproof, light weight polyurethane foam sandwich panel 1.Description Multi-SpaceTM light weight polyurethane foam ... low water absorption, low drying shrinkage value, noncombustible, fireproof, moisture proof, mould proof, high strength, smooth surface ... housing, general housing etc. light weight polyurethane foam sandwich panel