| President, China Patent Protection Association | ||
| 2002— | President, Dragon International Patent Office | |
| 2001—2002 | Deputy Commissioner, State Intellectual Property Office | |
| 1995—2001 | Deputy Commissioner, State Patent Office | |
| 1982—1994 | Patent Examiner, State Intellectual Property Office | |
| 1982—1994 | Senior Patent Examiner, State Intellectual Property Office | |
| 1982—1994 | Director, State Intellectual Property Office, Mechanical Examination Department | |
| 1980—1982 | Engineer, Changchun No. 1 Motor Vehicle Plant Jilin Province, Changchun City |