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