... the green products usable to replace many materials, such as paper Face plasterboard, plywood, and plaster board. 2. Performance ... from smog ,high intensity, light quality, sound insulation ,heat preservation,waterproof,fireproof. Free from freezing and erosion, minuteness expanding ... -absorption ratio :> 95% Bending strength: 0.8-1Mpa Heat transfer coefficient:<0.065w/m.k Dryness retraction :< 0.5mm/m ...