In February 2009 , Yang gave up his position as chairman and again became CEO at Lenovo .
Yang Yuanqing was chairman of Lenovo 's board from 2004 to 2008 .
In February 2009 , chairman gave up Yang Yuanqing 's position as chairman and again became CEO Lenovo Lenovo .
Yang Yuanqing was chairman of Lenovo 's board from 2004 to 2008 .