... experieced workers can make elegant books for you Children's book,hard cover book,We will offer our printing service for printing process ... paper, 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 ...