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Great Decorative Performance Waterproof Polyester Fiber Acoustic Panels Product Description of polyester fiber acoustic panels: Polyester Fiber Acoustic Panel has the characteristics of high density,non combustion,wide sound-absorbing frequency band,decoration,simple construction,easy cutting and no dust pollution.The performance of thr high-quality version can reach Level B of flame retardant and Leval E of environmental protection. Hundreds of colors are available.The color