Specificationshard cover sketch book 1.Size,A4 and so on. 2.material paper and metal 3.printing,off set printing,0-4colour Specificationshard cover sketch book 1.Size,A4 and so on. 2.material paper and metal 3.printing,off set printing,0-4colour1)sizeAny size are available2)materialOffset paper,grey cardboard3)printing4/C s (CMYK),Digital,Flexographic,Gravure,Letterpress,Offset,Screen,Transfer4) ...