| Company | Timeline | Status | |
| Hydro Plant Limited Director • Secretary | 31 Dec 1991←33 Years→Current | Active | |
| Hydro Plant Limited Secretary • Unreported | 31 Dec 1991←33 Years→Current | Active | |
| Hydro Construction Limited Secretary • Unreported | 29 Sep 1991←25 Years→16 May 2017 | Dissolved | |
| Hydro Construction Limited Director • Secretary | 29 Sep 1991←25 Years→16 May 2017 | Dissolved | |
