1. Heat resistance 2. Good acid and alkali resistance 3. Good hydrolysis stability 4. Easy to dedust PPS bag filter1) PPS needle felt is a new type filter cloth of withstanding high temperature 2) made of PPS fiber produced by American Dupont company and Japanese Teijin company. PPS needle felt possesses advantages of acid and alkali resistance, antihydrolytic, fit stability, flame retardancy, ...