Shenzhen nanbeitong Electronic Co., Ltd   

Shenzhen nanbeitong electronic major R & D double card mobile phone, SIM card reader, MMC mobile phone expansion cards and other products. Double card mobile phone is a high-tech product upgrades, it can fit on a 2 SIM card, mobile phone SIM card inserted in the original mobile phone, without modification, installation and operation can be completed in 1 minutes. Your mobile phone will soon have two mobile phone function -- Dual SIM card (Shuang Hao, tennis), applicable to all GSM network mobile phone, Shuang Hao automatic standby switch, online, in English arbitrary choice. As of 2004 4 at the end of the month, according to the Ministry of information industry data, China Mobile and Chinese Unicom mobile phone fee in the number of users for 320000000 users. Related survey shows that currently has two (including the mobile phone cartoon, the main R & D, SIM card reader, MMC mobile phone expansion cards and other products. The dual card Double card mobile phone is a high-tech product upgrades, it can fit on a 2 SIM card, mobile phone SIM card inserted in the original mobile phone, without modification, ann...