Bilcent specializes in sound books. We have an exclusive patented technology of the page recognition ? automatically play recorded sound when book is opened. This simple and reliable technology can not be effected by ambient temperature, light, magnet and humidity, it can be used for story book, recordable sound book and recordable photo album, etc.,...It would be welcome if you can provide art files and sound files, of course we can also design the products what you want according to your requirements.