| Company | Timeline | Status | |
| Response Holdings Limited Director • Technical Director | 1 Oct 2002←16 Years→5 Dec 2018 | Dissolved | |
| D.H.N. Limited Director • Technical Director | 30 Aug 2002←1 Month→1 Oct 2002 | Active | |
| It First Ltd Director • Technical Director | 1 Oct 1999←19 Years→5 Dec 2018 | Dissolved | |
