we are offering xerox copy paper. a4 copy paper 80gsm specifications size: a4 copy paper 80gsm materials: 100% pure wood pulp (featuring super quality, and super brightness) quality grades: a a grade: 102%-104% brightness substance: 80gsm international standard-a4 (210mm*297mm) technical data moisture 3.5%-4.5%, thickness: 103-110 um surface roughness ts mlmin: 75-175 surface roughness bs mlmin: 100-200 bending stiffness md: >110 mn a grade: 102%-104% brightness substance: 80gsm international standard-a4 (210mm*297mm) technical data moisture 3.5%-4.5%, thickness: 103-110 um surface roughness ts mlmin: 75-175 surface roughness bs mlmin: 100-200 bending stiffness md: >110 mn bending stiffness cd: >50 mn opacity: 95 min cie whiteness: 167 cobb test: 27-33 gm2 27-33 no see through-print both sides guaranteed for trouble-free operation. capability: high speed copying100ppm, laser capable: inkjet capable, fax capable. high performance for both sides printingcopying