1Exterior, Interior 2)Waterproof, fireproof, soundproof, 3)light weight wall board 4)Heat Insulation 5)Fast construction Description:Light weight energy-saving EPS Sandwich ... 125mm thick 150mm thick 37db 40db 42db 44db 46db2013* Waterproof, light weight,soundproof,heat reflective insulation board 2013* Waterproof, light weight,soundproof,heat reflective ...