| Company | Timeline | Status | |
| Westlane Ventures Limited Director • Engineer | 1 Jun 2001←24 Years→Current | Active | |
Tritec Engineering Limited Director • Instrument Engineer | 1 Jun 2001←4 Years→31 Aug 2005 | Dissolved | |
| Sunbury Engineering Company Limited Director • Instruement Engineer | 1 Jun 2001←4 Years→31 Aug 2005 | Active | |
| Caltech Service Company Limited Secretary • Dir/sec | 12 May 1997←28 Years→Current | Active | |
| Caltech Service Company Limited Director • Dir/sec | 12 May 1997←28 Years→Current | Active | |
