| Company | Timeline | Status | |
| Techcal Ltd Director • Retired | 24 Oct 2006←19 Years→Current | Liquidation | |
| Techcal Ltd Secretary • Retired | 24 Oct 2006←19 Years→Current | Liquidation | |
| Sta Excel Limited Director • Retired | 30 Nov 1991←4 Years→2 Nov 1996 | Active | |
| Swimming Teachers' Association Limited(The) Director • Retired | 30 Nov 1991←4 Years→2 Nov 1996 | Active | |
