Item: PPS Needle Felt Weight 450GSM, 500GSM, 550GSM, 600GSM or customized. Temperature:170-190 �°C Feature:Our products are flame-retardant, exhibiting excellent performance under wet, acid, alkali and high-temperature environments. Normal Finishing:Singeing, Calendering, Heat set. Application:Its widely used for filtration in coal-fired power plant, waste incineration plants, metal smelting , chemical industry and other low oxidation flue gas dust removal.