A4 Copier 80gsm - Brand:OEM SERVICE WE PERFORM - Size: A4 (210mm x 297mm) - Substance: 80gsm - Brightness: 102-104% above - Color: white - Whiteness: CIE167 - Grade: All purpose Premium Paper - Sheet in Ream: 500 - Roughness: 140ml/Min - Roughness: 140ml/Min - Thickness: 110um - Opacity: 95% - Ream box: 5 Ream - Quality: 100% Virgin Wood A4 Copier 70 GSM Basis weight (g/m2) 70 + 4% (max) ISO 536 Thickness 97 ISO 534 CIE Whiteness 159 ISO 11475 Brightness % 96 ISO 2470 Opacity % 93 ISO 2471 Surface Roughness, Bendtsen (ml/min) 160 ISO 8791-2 A4 Copier 75 GSM Basis weight (g/m2) 75 + 4% (max) ISO 536 Thickness 103 ISO 534 CIE Whiteness 159 ISO 11475 Brightness % 96 ISO 2470 Opacity % 94 ISO 2471 Surface Roughness, Bendtsen (ml/min) 160 ISO 8791-2