RockLedge Global Pvt Ltd . We are a business house mainly importing and exporting the best quality A4 copier paper as well as US Letter size paper , probably the best to be found anywhere in the world market. For technical specifications please look at the information below : Substance : 80+/-2.5% GSM Thickness : 110+/-3 Micron Bluk : 1.37+/-0.03 cc/g Breaking length (MIN) : MD Meter 5200 CD Meter 2800 Tear factor (MIN) : MD - 48 CD - 50 Smoothness (Bendtsen) : I side : ML/MIN 300Max II side : ML/MIN Diff <150 Cobb-60 Value : TS : GSM : 26+/-2 WS : GSM : 25 +/-2 Brightness : 102 - 104 % Whiteness(CIE) : 160+/-5 Opacity(Print) : (MIN) : 94+/-1 Stiffness(Taber) : MD : Taber 2.1 CD : Taber 1.0 Shade : Bright Blue This is the information for our premium and most dominant product in the market in 80 GSM Grade. Kindly do contact us for the Latest prices as determined by the market at the time. We would love to establish a business relationship with your company. Regards Kunal Kumar Director - Purchase RockLedge Global Pvt Ltd. Ludhiana 141001 Punjab India