... strength, abrasion resistant,mainly used in pharmacy,distillery.polyester staple filter of the second kind:Better abrasion-resistant, ... used in distillery, Pharmacy, chemical industry and foodstuff.polyester staple filter of the third kind:Thickness, abrasion-resistance, ... characters.Mainly used in chemical industry,phamacy, charking.Polyester staple fiber series:Model NO. Density(warp/weft)(counts ...