... 1) Material: polyester, polypropylene, aramid, P84, acrylic, PPS, PTFE and all compound needle punched filter felt2) Can do all kinds ... , such as polyester, polypropylene, aramid, acrylic, P84, PPS,PTFE and compound filter felt3) Used for normal or high temperature exhaust ... filtration in chemical, carbon black, iron and steel, non-ferrous metallurgy, coal-fired boiler, refractory ...