... eco-friendly materials 4. short lead time Board Book Printing: High quality board book printingPaper material:White cardboard, grey back ... offset printing, panton color.Binding methord:Hard case binding, board book binding, two rounded corners.Finishing effect:Gloss or ... , temperature sensitive ink, water-colored ink.Accessories:Magnet, ribbon, EVA foam, plastic tray, sponge, PVC/PET/PP window, discs, ...