... than 0.8 2. Fire resistant Up to national standard , B grade GB6824-2006 3. Environment friendly The fluorocarbon release is 0 ... .05 ,up to international standard E1 grade 4. Light weight The density is only 0.2g/cm3 ... Setting wall , home theater , child room ,book room ,piano room B Commercial usage TV studio ,hotel , office room ,KTV,school ,business ...