| Company | Timeline | Status | |
| High Tech Tubes Limited Director • Metallurgist | 15 Mar 1994←2 Years 3 Months→28 Jun 1996 | Dissolved | |
| High Tech Tubes Limited Secretary • Metallurgist | 15 Mar 1994←2 Years 3 Months→28 Jun 1996 | Dissolved | |
| Second Grove Farm Residents Association Limited(The) Director • Metallurgist | 14 Aug 1991←2 Years 1 Month→4 Oct 1993 | Active | |
