Visitors stand in front of a promo board at the Macworld Expo 2009 in San Francisco, U.S. on Jan. 6, 2009. [Qi Heng/Xinhua]
![Visitors stand in front of a promo board at the Macworld Expo 2009 in San Francisco, U.S. on Jan. 6, 2009. [Qi Heng/Xinhua]](http://images.china.cn/attachement/jpg/site1007/20090108/000bcdb95f1d0acfa82202.jpg "Visitors stand in front of a promo board at the Macworld Expo 2009 in San Francisco, U.S. on Jan. 6, 2009. [Qi Heng/Xinhua]")