with automobiles and construction being its main application areas.

Sound-absorbing cotton is a kind of man-made inorganic fiber made of quartz sand, limestone, dolomite and other materials. According to different shapes and materials, sound-absorbing cotton can be divided into glass fiber sound-absorbing cotton, polyester fiber sound-absorbing cotton, rock wool sound-absorbing cotton, rubber and plastic sound-absorbing cotton, sponge sound-absorbing cotton, etc. Sound-absorbing cotton generally has…