... +4C printing,white cardboard 3.reasonble price puzzle book board children's/Kid's book[high quality] Item name:children's bookchildren ... ) Specification: cover+inner pages.2) Product material: coated art paper,book paper,offset paper,wood-free,foam,leather cover,etc.3 ... )Paper types: c1s/c2s gloss art paper,ect.4)Binding method:(perfect binding): saddle stitch,section sewn,hard bound,wire bind ...