| Company | Timeline | Status | |
| Microlab RF Limited Director • Director | 24 Nov 2004←4 Years→22 Sep 2009 | Dissolved | |
| Advanced Chemical Etching Limited Director • Company Director | 20 Mar 2000←5 Years→21 Mar 2005 | Active | |
| Teledyne Labtech Limited Director • Company Director | 5 Oct 1992←6 Years→1 Sep 1999 | Active | |
