... cardboard book for kids 1)Board book,hardcover book 2)Customized design is welcome 3)Kids enlightenment 4)ISO14001 Product Name: ... Hardcover cardboard book for kids MaterialC1S art board: 250gsm, ... stitch,thread sewing binding,square back binding,round back binding.4. Finishing:Glossy / matte lamination,UV/ oil varnish, ...