Detailed introduction to 100% Wood Pulp A4 Ream Copier Paper for Printing 80GSM:100% Wood Pulp A4 Size Copier Paper 80GSMA4 Size Copier Paper 80 gsmOffice Paper Copy PaperSubstance: 80 GsmBrightness: 102%-104%Opacity: 95%Roughness: 140 Ml/MinWeight: 2.56lbsMoisture 3.5%-4.5%,Whiteness: CIE167Thickness: 110UMSurface roughness TS ml/min: 75-175Surface roughness BS ml/min: 100-200Bending stiffness MD: 110 MnBending stiffness CD: 50 MnCobb Test: 27-33 g/m2 27-331. Copy paper with 100% virgin wood pulp, high quality, competitive price.2. Size: A0, A1, A2, A3, A4, B1, B2, B3, B4, letter size, legal size or as your require.3. Basic Weight: 70gsm, 75gsm, 80gsm.4. Material: 100% virgin wood pulp.5. Package: 500 sheets per ream, 5 reams per carton.6. Nice appearance-white and clean.7. Nice touch-smooth and bulky.8. No see through-print both sides, no jam in photocopy machine.9. Been developed for: Photocopy machine, laser printers, ink-jet printers, fax machine