Yang Xuqiang (1988.08-1993.03)


Xie Rumao (1993.05-1996.09)


Tang Mingxin (1996.09-1999.02)


Wang Zhen (1999.02-2000.04)


Huo Shuzhen(female) (2000.08-2003.01)


Wang Yongzhan (2002.12-2006.02)


Wang Xiaoyuan (2006.03-2007.11)


Li Zhongliang (2007.11-)