Crest cotton applications: the peak cotton, non-toxic, tasteless, environmental health, is ideal for interior insulation / acoustic, audio reflective material; widely used in recording studios, recording studios, audio-visual room, audio-visual room, a drum room, KTV, Tone Room , language lab, studio, audition room, acoustics lab, conference room, studio, theaters and other occasions, interior decoration, as well as room silencers, silencers generators, speakers and other sound-absorbing silencer places.