... book printing,kids paper board book Feature:1.safe and recycled material ,pass ISO certification 2.thick pages, 1000g Greyboard ... coating, die-cut to shape.Feature 1.safe and recycled material ,pass ISO certification 2.hard cover with lovely picture3. ... ourselves. It is the stop service from printing, surface disposal, material die-cutting, craftsmanship, QC, packing, delivery, therefore quality ...