| 1998—???? | General Manager, Hangang Group, Wuyang Steel and Iron Company, Ltd. | |
| 1998—???? | Chairman, Hangang Group, Wuyang Steel and Iron Company, Ltd. | |
| 1998—???? | Deputy General Manager, Hangang Group (Hangang Group) | |
| 1997—???? | General Manager, Hangang Group, Wuyang Steel and Iron Company, Ltd. | |
| 1997—???? | Deputy Chairman, Hangang Group, Wuyang Steel and Iron Company, Ltd. | |
| Deputy Manager, Hangang Group, Wuyang Steel and Iron Company, Ltd. | ||
| General Assistant Manager, Hangang Group | ||
| Director, Hangang Group, Sales Department | ||
| Deputy Chief Economist, Hangang Group | ||
| Secretary, Hangang Group, 2nd Steel Mill CPC, Party Committee |