... and impregnation, the felt has the features of strong acid resistance, anti abrasion, smooth, and so on. It ... power plants, porcelain industry etc.Data Sheet:Item NameStrong Acid Resistant Compound Needle FeltItem No.SF-SMS-AR-500Weight ... Resistance AATCC100≥4Filter Velocity (m/min)1.5Finishing Treatmentheat setting, singeing, calendering, impregnation for acid reistantRemarks: All data expressed ...