Drum room sound absorbing cotton, self-adhesive, easy to install, soundproof cotton, flame retardant, flame retardant acoustic panel

Applicable scenes: opera house, kindergarten, theater, recording studio, conference room, living room, bedroom, concert hall, etc Material: Rubber cotton / / Color: black, red, yellow, blue / / Area: 1 square meter / / Thickness: 3CM, 5CM;