... ,high efficiency filtration up to98.99%,long service life 729 polyester woven bag Function and specification: 1.acid and alkali resistance ... made of staple fiber. Moreover, it is tubular and adopts satin weaving. After heat setting and other finishing treatment, it could ... to 98.99%, and the dust removal is easy. 729 polyester dust filter cloth (twill weave) Dust filter bag Dust filter ...