| Company | Timeline | Status | |
| Swimming Teachers' Association Limited(The) Director • Retired | 19 Jun 2014←4 Years→11 Sep 2018 | Active | |
| Sensitive Water Solutions Limited Director • Eningineering Consultant | 1 Oct 2009←4 Years→31 Dec 2013 | Active | |
| Sensitive Water Solutions Limited Director • Swimming Pool Consultant | 3 Jul 2003←10 Years→20 Dec 2013 | Active | |
