| Company | Timeline | Status | |
| Dirk Advanced Building Materials Limited Secretary • Unreported | 28 Mar 1991←34 Years→Current | Liquidation | |
Dirk Blastgrit Distribution Limited Secretary • Unreported | 28 Mar 1991←28 Years→9 Jul 2019 | Dissolved | |
| Milbank Limited Secretary • Unreported | 28 Mar 1991←12 Years→5 Dec 2003 | Active | |
