Centrifugal glass cotton can be made into wallboard, ceiling, space sound-absorbing body etc, can be absorbed in a room, reduce doubled the reverberation time, reduce indoor noise.

离心玻璃棉可以制成墙板、天花板、空间吸声体等，可以大量吸收房间内的声能，降低混响时间，减少室内噪声。

youdao

The walls were finished with sound-absorbing plaster, and the ceiling is made of cypress stained a rich brown hue.

WSJ: The $40 Million Party Pad

Methods include plastic-coated windows, energy-absorbing materials and tying down heavy objects and ceiling panels.

BBC: Newcastle engineers research bomb-proof train carriages