Mr. Li Bijian                      12/2019-01/2023

Mr. Wang Yu                         09/2016-10/2019

Mr. Ma Yaou                         06/2013-09/2016

Mr. Zhang Jianxin                    04/2010-03/2013

Mr. Chen Shanmin                   02/2007-03/2010

Mr. Sun Chun Ye                     02/2003-01/2007

Mr. Lin Shang Lin                    08/2000-12/2002

Mr. Jiang Qin Zheng                 12/1999-06/2000

Mr. An Qi Guang                       09/1997-11/1999

Mr. Wang Xiu Cai                     06 /1994-08/1997

Mr. Zhang Zhen Rui                   03/1991-06/1994

Mr. He Zhang Ming                   03/1986-03/1991

Mr. Wang Di San                      12/1981-02/1986

Mr. Wang Jing Rong                   06/1977-09/1981

Mr. Miao Jiu Rui                       09/1971-06/1977

Mr. Yuan Xin Hu                       08/1966-09/1971