... friendly,soundproof,not easily disformed,good quality sound acoustic insulation felt(1) density:0.09-0.8g/cm3 ... :wear-resisting,dustproof,sound-insulated,quakeproof,seal, heat-insulation(5) Use:mainly used for a variety of ... trains, ships, machine tools against dust. The products have good function in sealing, sound insulation, thermal insulation, insulation, heat insulation.(9)Contact information ...