Offset printing paper

Our products are student exercise books and A4 copier paper.
We use offset printing paper reels and copier paper reels as raw material.
The specification of the offset printing paper and copier paper we want to buy are as belo:

1-Offset printing paper
Specification:
Item Name Offset printing paper reels
GSM 50
brightness Above 88%
color white
Width of the reel 808mm
Quantity 250 metric tons

2-Copier paper
Specification
Item Name Copier paper reels
GSM 80
brightness Above 9