... . eco-friendly paper & ink Board Book Printing: High quality children's book printingPaper material:White cardboard, grey back cardboard, glossy or ... , gray board, etc. per your requirements.Paper weight:For cover: 300gsm, 350gsm, 400gsm white or gray back cardboard back ... ink.Accessories:Magnet, ribbon, EVA foam, plastic tray, sponge, PVC/PET/PP window, discs, small toys like crayons, markers, garland ...