| Company | Timeline | Status | |
| Prestech Limited Secretary • Finance | 1 Dec 2006←16 Years→21 Mar 2023 | Dissolved | |
| Bayham Holdings Limited Secretary • Finance | 1 Dec 2006←16 Years→31 Dec 2022 | Active | |
| Ranger Instrument Company Limited(The) Secretary • Finance | 1 Dec 2006←16 Years→31 Dec 2022 | Active | |
| Bayham Limited Secretary • Finance | 1 Dec 2006←16 Years→31 Dec 2022 | Active | |
