| Company | Timeline | Status | |
| The Frame Zone Limited Director • Optical Technician | 13 Jan 1998←1 Year→6 Feb 1999 | Active | |
| Spectrum Optical Ltd Director • Optical Technician | 17 Aug 1995←30 Years→Current | Active | |
| Spectrum Optical Ltd Secretary • Optical Technician | 17 Aug 1995←11 Years→8 Dec 2006 | Active | |
