... anti-alkali needle punched felt2) Weight: 500g/m23) Material: PPS fiber/ PPS long thread scrim4) Thickness (mm):1.8mm5) Air Perm ... with singeing, calendering, heat setting, Teflon coating and membrane PPS is one of the best filter materials with the properties ... waste incinerators, electric station boiler, industrial boiler, etc. SUITA PPS needle felt with good experiences for dust collecting in cement ...