Substance NCR Roll Substance (gsm) CB white or tinted: 48,50,52,55,60 CFB white or tinted:50,52,55 CF white or tinted: 48,50,52,55,60 *Tinted: green, pink, yellow, blue Basis Weight variation ±5%; Whiteness ≥85% Opacity ≥60% Paper Density 0.67 0.83 g/m3 Caliper Variation(CD) ≤6um for basis weights 50g/m2 or less; ≤8um for basis weights more than 50g/m2 Smoothness(CF both sides) ≥40s Imaging Sensitivity E≥86%;D≥86%(3 ply prints); Chromatic deviation ≤2.0%(coated side for tinted grades) Curls ≤12mm Surface strength(medium viscosity printing ink) ≥0.4m/s (printing side); Light resistance(residual E after 144hrs) ≥50%; Friction resistance(E) ≤6%; TSI(MD) ≥55N.m/g; Surface PH 6.0 9.0 Moisture on delivery ≤8.0% CB and CFB in sheets; 6.0% 7.5% CB and CFB in rolls; 6.0% 8.0% CF; Regular sizes Sheets: as customers requirement Rolls: 242 700mm, length=6,000-12,000m Export Packing Sheets: wrapped inside with thin plastic film against moisture, and outside with carton or craft paper coated by PE on pallets Rolls: Inside wrapped with 5mm-thick pearl cotton and outside with colored streched film.