NONWOVEN FILTER CLOTH: PTFE/P84/FMS/Nomex/PPS/GLASS FIBER PP/PET/ACRYLIC/PA ECT. PPS is one of the best filter materials with the properties of anti -acid, anti-alkali, hydrolysis resistant, but it is not so good at anti –oxidant. Mainly be applied in waste incinerators, electric station boiler, industrial boiler, etc.HNFILTER provide PPS needle felt for dust collecting in cement plants, iron and ...