Sun Yufeng: Male, born in 1965, master's degree, China nationality, without permanent residency abroad. /kloc-0 worked in the development management department of citic company from August 1987 to June 1988; From June 1988 to April 1989, I worked as a secretary in the general office of CITIC Company; 1April 1989 to 199 1 July 1989, worked in the Iron and Steel Department of CITIC Xingye Company as a project manager; 199/kloc-0 worked as a project manager in Beijing working group of citic American steel company from July, 2000 to September, 1993; 1September 1993 to1April 1999, worked for citic xinlu trading company as deputy general manager; 1 April, 1999 to April, 20 10/April,1worked in CITIC Metal Company, and served as assistant manager, deputy general manager and general manager; 2065 438+00-2065 438+04 worked in CITIC Metal Co., Ltd. as the general manager; From February 20 14 to June 201/kloc-0, he worked as the chairman of citic metal co., ltd; 20 16 1 1 Up to now, he has worked for CITIC Metal Group Co., Ltd. as the vice chairman and general manager; Since September 2004, he has served as a director of the Company.