Liu Xisun (1992.05-1995.04)

Long Qingbi (1995.05-1998.08)

Chen Duqing (1998.09-2000.06)

Wang Xiaoyuan (2000.08-2003.06)

Li Zhongliang (2003.07- 2006.01 )

Yan Xiaomin (2006.02-2008.12)

Li Baojun (2008.12-2010.09)