| Company | Timeline | Status | |
| Challagh Ltd Director • Civil Engineer | 13 Nov 2013←8 Years→1 Nov 2022 | Dissolved | |
| Tough Construction Holdings Limited Director • Civil Engineer | 28 May 2002←1 Year 1 Month→30 Jun 2003 | Dissolved | |
| Tough Construction Limited Director • Civil Engineer | 28 May 2002←1 Year 1 Month→30 Jun 2003 | Active | |
