1.Weight:
220gsm--1550gsm(Higher GSM can be laminated)
2.Size:
normal size is 787mm*1092mm or 889mm*1194mm,also can produce any size as the customer's needed.
3.Thickness standard:
100g/m2=0.158mm-0.163mm,thickness of the product is over than 0.35mm.     
4.Useage:
Duplex gray paper board can be used to make gift boxes, wine boxes and other boxes,and also can be used for furniture, l age bags lined plate. high-end paperboard also can be used to make notebook paper, the cover of hardcover books, folders and albums, etc.
5.Sample:
sample is free and can be sent as soon as possible ,but customer need to pay for freight