1,cardboard book+sound module+customer's voice 2,Each picture with relative music 3,OEM 4,Children's education Coardboard book+sound module+customer's voice with funny pictures, ideal choice for children's pre-school educationMaterials: 4C printing 128gsm art paper, 1, 000gsm gray board, 250gsm paper, 800gsm gray board, and sound bar(ABS plastic material) Finishing: UV varnishing and glossy ...