| Company | Timeline | Status | |
| Hinterland Limited Director • Engineer | 19 Apr 1991←34 Years→Current | Active | |
| Cleamax Limited Director • Engineer | 19 Apr 1991←20 Years→1 Jan 2012 | Active | |
| Hinterland Limited Director • Unreported | 1 Jan 1970←55 Years→6 Dec 2025 | Active | |
