| Company | Timeline | Status | |
| Perdac Limited Secretary • Professor | 14 Apr 2003←13 Years→26 Apr 2016 | Dissolved | |
| CPF Research Limited Director • Consultant & University Professor | 5 Mar 2003←20 Years→13 Jun 2023 | Dissolved | |
| Perdac Limited Director • Professor | 4 Jul 2001←14 Years→26 Apr 2016 | Dissolved | |
