pps filter cloth with long sevice life 1.strong integrate retentively and internal chemical resistance. ... melting point 285C,,working temperature 190C,instaneous operating temperature 232C,limited oxygen index 34-35.2).Be suitable for the oxygen ... .°C210Anti-acidExcellentAnti-alkaliExcellentTreatmentleveling,calendaring and finishing pps filter cloth with long sevice life