Shenzhen Koca Technology Limited

we are OEM for sd card with high quality and good price.nwe have another kind of card called 3c card, it  can be used as traditional USB Disk it also can be used as Standard SD/MMC card; it is the standard SD/MMC size.And it is DC/mobile/PDA media card also; Standard SD/MMC and USB port; share storage mediaStandard SD/MMC size; Only 2.1mm, the thinnest Pen drive in the world, can be stored in wallet!Standard SD/MMC and USB port; share storage media Standard SD/MMC size; [详细介绍]