... Efficency 3.Material:polyester scrim 4.ISO9001certification PET208 filter fabricsmaterial:polyester staple filamentdensity:(counts/10cm)(warp/weft) ... so with the both advantage of waven the nonwoven filter fabrics, have a good performance on industrial filtration ... melting,chemical indusrtial,for the equipments of frame filter presses,centrifuge filters,vaccm filters,etc.the filtering precision ...