| Company | Timeline | Status | |
| TDT Electronics Limited Secretary • Director | 14 Aug 2009←16 Years→Current | Active | |
| Blue River Controls Limited Director • Director | 31 Oct 2003←22 Years→Current | Active | |
| TDT Electronics Limited Director • Engineer | 31 Oct 1990←35 Years→Current | Active | |
| TDT Electronics Limited Secretary • Unreported | 31 Oct 1990←6 Years→20 Sep 1997 | Active | |
