| Company | Timeline | Status | |
| Swallow Information Technology Limited Director • Director | 20 Nov 2014←10 Years→Current | Active | |
| Gridsearch Limited Director • Engineer | 21 Nov 2000←24 Years→Current | Active | |
| Gridsearch Limited Secretary • Unreported | 21 Nov 2000←24 Years→Current | Active | |
| JFDI Engineering Limited Director • Engineer | 7 Nov 1997←27 Years→Current | Active | |
| JFDI Engineering Limited Secretary • Engineer | 7 Nov 1997←27 Years→Current | Active | |
