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Ma Zhenguan (L), a sophomore from Beijing Forestry University, introduces the auto jointing robot he made at the 12th China Beijing International High-tech Expo in China International Exhibition Center in Beijing on Wednesday, May 20, 2009. [CRI]
![Ma Zhenguan (L), a sophomore from Beijing Forestry University, introduces the auto jointing robot he made at the 12th China Beijing International High-tech Expo in China International Exhibition Center in Beijing on Wednesday, May 20, 2009. [Photo: CRIENGLISH.com]](http://images.china.cn/attachement/jpg/site1007/20090521/000802ab80120b7efc5c04.jpg "Ma Zhenguan (L), a sophomore from Beijing Forestry University, introduces the auto jointing robot he made at the 12th China Beijing International High-tech Expo in China International Exhibition Center in Beijing on Wednesday, May 20, 2009. [Photo: CRIENGLISH.com]")
