| Company | Timeline | Status | |
| City Technology Holdings Limited Director • Company Director | 29 Aug 1995←4 Years→28 Oct 1999 | Dissolved | |
| Comstack Limited Director • Chemist | 19 Jul 1993←6 Years→28 Oct 1999 | Dissolved | |
| City Technology Limited Director • Quality Director | 28 Oct 1992←7 Years→28 Oct 1999 | Active | |
