we are a manufacturing company of a4 copy papers  of high quality. we can supply up to 10x20ft containers every month,below is the specification of our paper.
weight:80gsm
brightness:100% to 104%
opacity:88%
smoothness: 22s 20s
tolerance: 3.5
jam free
size: 210x297
thickness(um): 106
cie whiteness: 100%-104%
500sheets/ream / 5 reams / carton
moisture 3-5%