It has the features of strong acid resistance, anti abrasion, smooth, ... and impregnation, the felt has the features of strong acid resistance, anti abrasion, smooth, and so ... porcelain industry etc.Data Sheet:Item NameStrong Acid Resistant Compound Needle FeltItem No.SF-SMS- ... Treatmentheat setting, singeing, calendering, impregnation for acid reistantRemarks: All data expressed as typical values. ...