| Company | Timeline | Status | |
| NHC Holdings Limited Director • Chartered Engineer | 18 Nov 2003←3 Years→9 Nov 2007 | Active | |
| Niagara Healthcare Limited Director • Chartered Engineer | 17 Jul 2002←5 Years→9 Nov 2007 | Active | |
| NHC Technology Limited Director • Chartered Engineer | 17 Jul 2002←5 Years→9 Nov 2007 | Active | |
