| Company | Timeline | Status | |
| Optoplus Ltd Director • Co Director | 13 Jan 2006←19 Years→Current | Active | |
| Luminanz Limited Director • Electronics Distributor | 14 Apr 2005←20 Days→4 May 2005 | Dissolved | |
| Plus Opto (Holdings) Limited Director • Director | 20 Oct 1999←26 Years→Current | Active | |
| Plus Opto Limited Director • Managing Director | 22 Nov 1994←30 Years→Current | Active | |
