... -50 meters. 1: sub-felt cloth material: polyester staple fiber and polypropylene staple fiber. 2: Felt cloth color: red ... in mechanical, electrical, chemical, cement, metallurgy, oil field and other industries, such as stainless steel, cables, marble polishing; ... trains, ships, dust-proof windows and doors and other equipment, sealing, insulation, insulation, insulation insulation and so on, have a good ...