This is the salesman, Catherine, from Shenzhen HXS Electronics Company Limited. We are the professional manufacturer of sound modules, sound books for kids and babies, children board books and toy sound modules, including function of playing customized pre-recorded music or songs and recording customer's personal voice one. And our own injection department, R&D teams, production department are availavle for your OEM & ODM items. Welcome to your more attention and inquiry, and thanks for your support.