... : 70~80gsm 3. basic brightness : 94~104% 4.OEM available copier paper materilweightbrightnesspackingsize100% virgin wood paper70-80gsmAbout 92%-104%500 sheets ... per carton A3,A4,B4,B5 the features of the copier paperNo jam in photocopy machineNo double feestay falt after copyingHigh ... all kinds of laser,ink,jet printers and copiers.The copier paper is made in our own factory,so we can ...