... 3:ISO 9001:2000 ROSH standard 4.fast Delivery Peritoneum Filter Bag1.Filter bag features:1) material: polyester, polypropylene, aramid, P84, ... PPS, PTFE and all compound needle punched filter felt2) can do all kinds of filter bags for liquid, and air filters according to ... , acrylic, P84, PPS, PTFE and all compound needle punched filter felt3) used for normal or high temperature exhaust filtration in ...