1.Filter bag is exquisite sewing.. 2.Material: polyester, fiberglass, aramid, P84, acrylic, PPS, PTFE and PTFE membrane surfac filter bags 1.Filter bag is exquisite sewing.. 2.Material: polyester, fiberglass, aramid, P84, acrylic, PPS, PTFE and PTFE membrane surface 1.The material of the filter bag: (1) 100% POLYESTER (2) ANTI-STATIC POLYESTER (3) 100% POLYPROPYLENE (4) HOMOPOLYMER ACRYLIC (5) ...