| Company | Timeline | Status | |
| Abakus Scientific Limited Director • Director | 18 Jan 2006←17 Years→18 Apr 2023 | Dissolved | |
| Abakus Limited Director • Manufacturing Director | 18 Jun 1991←32 Years→19 Dec 2023 | Dissolved | |
| Abakus Limited Secretary • Geology Lecturer | 18 Jun 1991←32 Years→19 Dec 2023 | Dissolved | |
