Multi-purpose A4 Paper

We are offering multi-purpose a4 paper.
multi-purpose a4 paper
1, 70, 75, 80gsm,
2.size:a3, a4, b4, b5, 8.5"x11", 8.5"x13".
3.100% virgin wood pulp,
4.500sheets/ream.5reams/carton
5.supply oem service.
6.be used for photocopy machines, laser prints, ink-jet printers, fax machines
physical test unit specification
grammage g/m2 70 75 80
thickness µm ≥91 95 101
density g/cm3 ≥0.72
roughness ws ml /min. 200~350 200~400 200~400
fs ml /min. 200~350 200~400 200~400
brightness % ≥102
opacity % ≥82 ≥84 ≥86
cobb60 data g/m2 ≤30
tensile md kg /15 mm 4.5 5 6.2
strenghth cd kg /15 mm 2 2 2.5
moisture % 4~7
wax picking a ≥14
usage office
packing 500sheets/ream, 5-10reams/carton.
packing: for sheets paper :500sheets/ream, 5reams/carton ;