... making boxes,hard and strong enough,less flexible,high stiffness and quality. High quality Grey Paper specification 1.Weight:220gsm--1650gsm(1700g or ... can be used for furniture, luggage bags lined plate. high-end paperboard also can be used to make notebook ... hardcover books, folders and albums, etc.5.Feature: Consistent quality, high stiffness, good folding strength,less flexible, no cracking after ...