| Company | Timeline | Status | |
Optimal Flight Physics Limited Secretary • Company Secretary | 12 Nov 2001←10 Years→1 Jan 2012 | Dissolved | |
| Optimal Aerodynamics Limited Secretary • Company Secretary | 12 Nov 2001←10 Years→1 Jan 2012 | Active | |
| 49/65 Granville Road Residents Society Limited Director • Research Student | 31 Dec 1992←6 Years→6 Aug 1999 | Active | |
