... felt /needle felt/needle punched felt: 1.against dust, sealing, sound insulation, thermal insulation ( A) Industrial Felt: including 112 type, 122, 132 type, 332 types of industrial felt ... special blankets. (B) of the Civil felt: Civil cold felt, needle felt, felt insoles. (C) of the fiber needle felt: cold chemical fiber carpets, printed synthetic carpets ...