A4 copy paper100%woodpulpbrighness: 93%-106%Weight:70gsm,75gsm, 80gsmPackage: A4 paper 70g:500 sheets/ ream, 8 ream/ carton, 8000 ream/ 20" GPA4 paper 75g:500 sheets/ ream, 8 ream/ carton, 8000 ream/ 20" GPA4 paper 80g:500 sheets/ ream, 8 ream/ carton, 7800 ream/ 20" GP 210x297 mm whiteness : CIE 167 Thickness : 110 um Opacity : 90 mi