| Company | Timeline | Status | |
| Systems Union Group Limited Director • Professor | 15 Jan 1995←4 Years→25 Mar 1999 | Active | |
| Value Focus Limited Director • Professor | 26 Aug 1994←29 Years→2 Apr 2024 | Dissolved | |
Mars Business Associates Limited Director • Accountant | 31 Dec 1990←16 Years→31 Dec 2006 | Dissolved | |
