... ; Antistatic , PTFE, Fiber glass cement (asphalt ) plant vacuum cleaner dust bag HL FILTER dust collector filter bag media is ... °CPeak temperature260°CFinishingPTFE impregnation,Laminating, coating 3. Cement industry bag filters : PTFE needle felt dust bag application ... high temperature , such as chemical industry , coal-fired boiler , waster incineration industry and non-ferrous metal production .4 ...