polyester needle felt 1.material is PE,PP,PPS 2.acid ... dustcollecting,long using-life etc. Common character as ordinary filter felt have. Besides, owing to its medial temperature resistance (can ... especially its excellent anti-abrasion, polyester needle punched filter felt have the largest quantity of turnouts grams are from 350g ... /600110/1004~12<130, Max.150 polyester micron felt for liquid filtration