... : polyester, polypropylen, aramid,P84,acrylic,PPS,PTFE and all compound filter bag features:1) Material: polyester, polyprolene,aramid,P84,acrylic,PPS ... ,PTFE and all compound needle punched filter felt.2) Can do all kinds of filter bags for liquid,and air filters ... ,acrylic,P84,PPS,PTFE and compound filter felt.3) Used for normal or high temperature exhaust filtration in chemical, carbon black, iron ...