From September 2007 to April 2008 , he also served as the chairman of Taigang Stainless Steel .
Chen served as the chairman of Taiyuan Iron and Steel Group between December 2001 to April 2008 .
From September 2007 to April 2008 , Chen also served as the chairman of Taigang Stainless Steel .
Chen served as the chairman of Taiyuan Iron and Steel Group between December 2001 to April 2008 .