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Material: 100% wood pulp Substance: 70/75/80gsm Moisture” 3.5 to 4.5% Whiteness: >98% Thickness: 103 to 110μm Surface roughness TS: 75 to 175ml/minute Surface roughness BS: 100 to 200ml/minute Bending stiffness MD: >110Mn Bending stiffness CD: >50Mn Opacity: >94% Brightness: 101 to 104% CIE whiteness: 148 to 152 Cobb test: 27 to 33g/m2 Weighs: 20lbs/75G No jam in photocopy machine No double feed Stay flat after copying Leave no dust in the copy-machine Nice appearance-white and clean Nice touch-smooth and bulky No see through-print both sides Been developed for: photocopy machines, laser, ink-jet printers and fax machines Dimensions: International standard A4: 210 x 297mm A3: 420x 297mmAmerica standard: 8.5 x 11-inch (216 x 279mm) 8.5 x 13-inch (216 x 330mm)Other technical data: A4 size: 8.5 x 11-inch (216 x 279mm) Weight: 80g 98 to 103% brightness75g 98 to 103% brightness70g 98 to 103% brightnessPacking: 100% wood pulp 500 sheets/ream 5 reams/carton