Shenzhen sandi Digital Co., Ltd has been a high-tech company professional in researching and producing computer motherboards since the establishment in 2001. The sales turnover of our MP3 player/ MP4 player /USB flash drive series was the biggest in the field in 2002, 2003 and 2004. Most of our products are for export. In Shenzhen market, achieves the biggest sales turnover. Most trading companies engaged in tablet PC and laptop,notebook,netbook, field know sandi Digital . We have a strong R&D ...