Shenzhen Memory Top Tech. Co., Ltd is one of the professional designer and manufacturer from China. And our company is focusing on the developing, manufacturing and distributing of computer and mobile peripheral incuding bluetooth headset bluetooth USB adapter, card reader, SIM card backup and USB. In our company all of the producing procedures are operated by ourselves. So we can assure our customers not only the high quality but also competitive price, speedy delivery date, professional service and support after sale.