... temperature circumstance(under 150 C), the polyester needle felt will satisfy the bag filter systems, if the ... tail gas from vertical kiln), petroleum fumes from mixing round the beton and asphaltum, coal fired boiler, etc, ... fume, the acid dew will exist. Aramid needle felt, besides equip the ability of spinnability, abrasion resistance, ... , long service life. Aramid(Nomex) needle felt for dust collector