... boxes,hard and strong enough,less flexible,high stiffness and quality. High quality Grey Paper specification 1.Weight:220gsm--1650gsm(1700g or ... board can be used to make gift boxes, cosmetic boxes, wine boxes and other boxes,and also can be used for ... of hardcover books, folders and albums, etc.5.Feature: Consistent quality, high stiffness, good folding strength,less flexible, no cracking after ...