1.waterproof 2.fire retardant 3.sound insulation 4.non-toxic 5.dampproof Features:1. feather light,non-absorb water,fire retardant and self-extinguishing2. sound insulation,heat insulation,noise absorption,heat preservatjion and corrosion preventin3. weather prooof,vandal proof ,and can be shaped ,moulded ,paintedand screen printed4. non-warping and stain proof5. non-corrosive, non toxic and ...