1, sizes: customize 2, 1200g grey board, 157g art paper, 250g white-grey paper 3, 4c ... various sizes and colors are available2, paper material: 1200g grey board, 250g white-grey paper, 157g art paper3, printing: 4C ... .5 x 9 x 30.5cm2.Materials: white and corrugated board3.Surface disposal: 4-color printing4.OEM orders are ... paper: paper type, weight of the paper, how many sheets. 2. Cover material