| Company | Timeline | Status | |
| Kilofrequency Limited Director • None | 28 Jan 2015←5 Years→19 Aug 2020 | Active | |
| Trochilics Limited Director • None | 28 Jan 2015←5 Years→19 Aug 2020 | Active | |
| Coborn Engineering Company Limited Director • Managing Director | 1 Aug 2007←13 Years→19 Aug 2020 | Liquidation | |
