1971.02—1979.08 monitor and captain of chengguan squadron of traffic police brigade of Lanzhou public security bureau;

1979.08—1981.10 Lanzhou City Public Security Bureau Chengguan District Public Security Bureau is engaged in household registration;

1981.10—1988.12 Office of the Bureau of Government Affairs of Gansu Province.

Responsible person, store manager, deputy manager and manager of the company;

1988.12—1994.10 General Manager and Party Secretary of Gansu Xinlong Trading Company;

1994.10—1999.03 Secretary of the Party Committee and General Manager of Gansu Provincial Township Enterprise Corporation;

1999.03—20010.09 Deputy Director and Party Committee Member of Gansu Water Conservancy and Electric Power Engineering Bureau;

200 1.09—2006.06 General Manager and Party Secretary of Gansu Products Group Co., Ltd. (director level) (February 2003 to June 2006, President of Gansu Material Circulation Association; Since March 2003, he has been elected as the vice president of China Federation of Material Circulation and Purchasing, and studied in the Master's Program of Economic Law of China University of Political Science and Law from 200 1. 12 to 2003. 12, and obtained a master's degree);