... 2)Waterproof, fireproof, soundproof, 3)light weight wall board 4)Heat Insulation 5)Fast construction Description:Light weight energy ... -saving EPS Sandwich wall PanelComposition: Calcium silicate board (face panel) + Cement and EPS (core) + Calcium ... 42db 44db 46db2013* Waterproof, light weight,soundproof,heat reflective insulation board 2013* Waterproof, light weight,soundproof,heat ...