| Company | Timeline | Status | |
| Foreva Concrete Repairs Limited Director • Civil Engineer | 31 May 1992←10 Years→23 Dec 2002 | Active | |
| Slabstress Limited Director • Civil Engineer | 22 Jun 1991←11 Years→23 Dec 2002 | Dissolved | |
| Freyssinet Limited Director • Civil Engineer | 22 Jun 1991←11 Years→23 Dec 2002 | Active | |
