... chip board usage: hard cover jacket, middle , jigsaw puzzle, folder, album, case and leather, ect grey chip boardBRAND: KINWA&KINBOTHIS KIND OF GREY BOARD ... IS MADE BY 100%CHINA WASTE PAPER AND OCCTHIS KIND OF GREY BOARD ... jacket, middle and top grades stationery, jigsaw puzzle, folder, album, case and leather, ect.... The width of the paper ...