Size:A4 Color:White Product name:a4 paper usage:tocopy Machines,Laser Printers,Ink-jet Printers,Fax Machines Packing:500 sheets per ream, 5 reams per carton material:100% wood pulp weight:80 75 70g whiteness:98-106% Thickness:-103-110 um Surface roughness Ts ml min:75-175 Surface roughness Bs ml min:100-200 Moisture:- 3.5-4.5%