1.custom talking book for kids education 2.ROHS CE FCC SGS 3.good voice effect ... foam, plastic tray, sponge, PVC/PET/PP window, discs, small toys like crayons, markers, garland paper, watercolors, glues, pen, pencils, and ... , electronic modules, sound module box, educational sound book, sound plush toys etc.More than 25 professional electronic and machinery engineers help ...