memory module--MP3 Modules Built-in Memory 1.With NAND-FLASH memory,can play for a long time. 2.End-users can' ... to be copy by other companies. but this module, it has hidden zone and public zone. music files be programed by us ... , such as intelligent navigation of refrigerators, air conditioners, induction cooker and so on, as well as advanced toys, automotive electronic systems ...