... printing 128gsm art paper, 1, 000gsm gray board, 250gsm paper, 800gsm gray board, and sound barSound: music, animals, vehicles, ... learningcustomized sizes,sound and printings are welcome . Typetalking board books/audio book/musical books description:Sound chip/ ... and long time duration · Paper type: Cardboard, Coated Paper, Fancy Paper · Printing type: Flexographic Printing, Screen Printing · Triggered ...