| Company | Timeline | Status | |
| Viamed Properties Limited Director • Director | 19 Jul 2007←18 Years→Current | Active | |
| Vandagraph Sensor Technologies Limited Director • Company Director | 5 Jul 1996←29 Years→Current | Active | |
| Vandagraph Sensor Technologies Limited Secretary • Unreported | 8 Nov 1995←30 Years→Current | Active | |
| Viamed Limited Director • Secretary | 12 Jun 1991←34 Years→Current | Active | |
| Vandagraph Limited Director • Secretary | 31 May 1990←35 Years→Current | Active | |
| Vandagraph Limited Director • Unreported | 1 Jan 1970←56 Years→Current | Active | |
