| Company | Timeline | Status | |
| E.Tc3 Limited Director • Consultant | 31 May 2002←23 Years→Current | Active | |
| Skyjoin Property Management Limited Director • Consultant | 26 Jan 1997←2 Years 10 Months→23 Nov 1999 | Active | |
| 59 Fern Avenue Limited Director • Environmental Consultant | 26 Oct 1991←5 Years→26 Nov 1996 | Active | |
