... Soundproof effect 4.Thickness:0.6mm Micro-Hole Sound Absorption Aluminum Foil Flame Retardant CharacteristicIt can be ... excellent flame resistance, sound absorption and insulation. It's widely used to improve the sound quality and control of ... hotels, apartments, roof, walls, central air conditioning, insulation, sound absorption, sound insulation, shock-resistant material, as well as roads doors and ...