| Company | Timeline | Status | |
| Colsan Acoustic Design Limited Director • None | 14 Apr 2011←11 Years→26 Jul 2022 | Dissolved | |
| Colsan Technology Group Limited Director • None | 13 Apr 2011←11 Years→26 Jul 2022 | Dissolved | |
| Colsan Microelectronics Limited Director • Representative | 25 Nov 1991←32 Years→24 Apr 2024 | Dissolved | |
| Colsan Microelectronics Limited Secretary • Unreported | 25 Nov 1991←8 Years→25 Nov 1999 | Dissolved | |
