| Company | Timeline | Status | |
| 32a Eaton Rise Management Company Limited Director • Consultant Engineer | 16 Apr 2003←11 Years→27 Nov 2014 | Active | |
| 168 Castelnau Limited Director • Consultant Engineer | 9 Sep 1994←20 Years→31 Oct 2014 | Active | |
| 168 Castelnau Limited Secretary • Consultant Engineer | 9 Sep 1994←20 Years→31 Oct 2014 | Active | |
Advanced Project Developments Limited Director • Consultant Engineer | 9 Nov 1991←24 Years→5 Apr 2016 | Dissolved | |
