| Company | Timeline | Status | |
| Custard Architecture Limited Director • Architect | 1 Mar 2007←8 Days→9 Mar 2007 | Active | |
| Granville Park Limited Director • Architect | 15 Jun 2001←4 Years→6 Sep 2005 | Active | |
| Hok International Ltd Director • Architect | 7 Oct 1996←7 Years→16 Sep 2004 | Active | |
