Shenzhen Vinco Soundproofing Materials Co.,Ltd is one of the best polyester fiber sound absorbing manufacturers and suppliers in China,Website:://.goodsoundproof.com, welcome to wholesale our customized polyester fiber sound absorbing made in UK, and also welcome to check the price with us.Polyester fiber soundproofing cottonProduct introductionWith the force from outside, there form into a small gap with each other under the circumstance of melting. It is a kind of man-made inorganic fibers.name:Polyester fiber soundproofing cottonMaterial:Polyester fiberSize:1000mm*20000mm*30mm or customizedShape:rollFireproof:B1 gradecolorwhite, or can be customizedpackageBoxesEnvironmentalE1 gradedensity>16kg/m3 or customized!!Sound-absorbing coefficient0.8Function1. It is a kind of eco-friendly product,and it can reuse.2. It can preserve heat, heat insulation, sound absorbing.3. You can make different form according to the different requirement to prolong its lifetime.4. It is high strengthen, and no smell,no taste, can resist water, well breath.5. It is a high efficient sound and heat insulation materials, and close to the nature most.Theory: 1.It can form circle flow inside the cavity through special fiber organization, so that to realize the sound-absorbing and sound insulation effectively.2.Its' stability and excellent physical features of the system make it not change its shape and shrinking or expanding because of the change of temperaturePay attention to This should be put inside, after that,you still need put another material to cover it.