... multi-layer circuit board surface cleaning polishing. Non-woven brush rollers of all types,made of ... ( ZHD ) & ( Rain ) includes wide ranges of non-woven abrasive brush, flap wheels, sheets, disc, unitized wheel, strip ... PRINTING INK,EPOXY RESIN AND OXIDE FILM.NON-WOVEN ABRASIVE BRUSHGRAND60#2000#OUTER DIAMETER4"16"LENGTH10" ... MORE UNIFORM AND HOMOGENEOUS FINISHING non-woven abrasive brush roll/buff