| Company | Timeline | Status | |
| Trek Holding Company Ii Limited Director • Executive | 28 Mar 2000←11 Years→1 Jul 2011 | Dissolved | |
| Trek Diagnostic Systems Limited Director • Executive | 29 Jan 1999←12 Years→1 Jul 2011 | Active | |
| Trek Holding Company Limited Director • Executive | 26 Jan 1999←12 Years→1 Jul 2011 | Dissolved | |
