Specifications: 1 Soundproofing Material 2 ISO9001-2008 3 Application: building materials for lowing sound level 4 PP&PET sound proof cotton for construction Introduction: There are three major types of sound absorbers: porous absorptive materials, diaphragmatic absorbers, and resonant or reactive absorbers. Nearly all the soundabsorbing materials designed for use in residences are porous absorptive materials.Our sond-absorbing materials belong to the first one. Features: Decoration nature: Tender, affluent nature material experience, various available modern colours for choices, simple and convenient decoration model. Thermal retentivity: Special sound absorbing rules make the excellent thermal retentivity nature and create comfortable space with stable temperature. Flame-retardance: Plyester fiber fire-proof material, excellent flame-retardant nature, up to national grade B1 fire-proof inspection report. Environment-protection: Plyester fiber is close to nature color and characters, with formaldehyde radioactivity safety qualified certificate from national inspection organization. It is the very green environment product. v High sound-absorbing performance v Low density v Strong space-filling ability v Great compressibility v Excellent hi-temp insulation ability Usage: 1 car industry, office electronic equipments, ships, etc. 2 Home appliances like airconditioner and refrigerator; home decorating wall or roof noise and heat absorbing ; 3 entertainment places such as KTV room, recording studio, audio visual room, theatre, TV broadcaster and radio station. 4 The noise dealing in laboratory and piano room. 5 The sound sbsorb in pipe and elevator shaft. 6 Instruments like in factory, machine room and air-condition system. --Packing-- Meltblown sound insulation cotton for construction