... -friendly materials 4. short lead time Board Book Printing: High quality board book printingPaper material:White cardboard, grey back cardboard, glossy ... per your requirements;128gsm, 157gsm art paper & 1.5mm, 2mm, 2.5mm, 3mm gray board.For text: 300gsm, 350gsm, 400gsm ... glow in dark, temperature sensitive ink, water-colored ink.Accessories:Magnet, ribbon, EVA foam, plastic tray, sponge, PVC/PET/PP ...