| Company | Timeline | Status | |
| Sampling Engineering Systems Limited Secretary • Business Development Manager | 14 Dec 2000←2 Years 8 Months→28 Aug 2003 | Active | |
| Optima International Limited Director • Business Development Manager | 13 Jan 2000←3 Years→28 Aug 2003 | Active | |
| Optimum Systems Limited Secretary • Unreported | 1 Jun 1999←4 Years→1 Jun 2003 | Active | |
| Optima House Limited Secretary • Unreported | 1 Jun 1999←4 Years→28 Aug 2003 | Active | |
| Optima International Limited Secretary • Unreported | 1 Jun 1999←4 Years→28 Aug 2003 | Active | |
