| Company | Timeline | Status | |
| Electronic Camera Company Limited Director • Film Technician | 7 Nov 1991←34 Years→Current | Active | |
| Q.D.M.C. Limited Director • Camera Man | 11 Jun 1991←14 Years→15 Jun 2005 | Active | |
| Electronic Camera Company Limited Director • Unreported | 1 Jan 1970←56 Years→Current | Active | |
