| Company | Timeline | Status | |
| Colsan Acoustic Design Limited Director • None | 14 Apr 2011←10 Months→13 Feb 2012 | Dissolved | |
| Colsan Technology Group Limited Director • None | 13 Apr 2011←10 Months→13 Feb 2012 | Dissolved | |
| Colsan Microelectronics Limited Director • Director | 6 Apr 2008←3 Years→13 Feb 2012 | Dissolved | |
| Colsan Microelectronics Limited Director • General Manager | 1 Feb 1997←2 Years 1 Month→31 Mar 1999 | Dissolved | |
| Colsan Microelectronics Limited Secretary • General Manager | 1 Dec 1994←4 Years→30 Apr 1999 | Dissolved | |
