| Company | Timeline | Status | |
| L.C.S. Holdings Limited Director • Manufacturing Director | 13 Jun 2003←10 Years→5 Nov 2013 | Active | |
| L.C.S. Holdings Limited Secretary • Unreported | 13 Jun 2003←10 Years→5 Nov 2013 | Active | |
| L.C. Switchgear Limited Secretary • Manufacturing | 21 Oct 1999←14 Years→5 Nov 2013 | Active | |
| L.C. Switchgear Limited Director • Manufacturing Director | 21 Oct 1999←14 Years→5 Nov 2013 | Active | |
| Tsprofessional Audio Limited Secretary • Unreported | 17 Mar 1992←12 Years→10 Feb 2005 | Active | |
