| Company | Timeline | Status | |
| Radio Technology Holdings Limited Secretary • Accountant | 12 Jun 2006←9 Years→30 Sep 2015 | Active | |
| Event Communications Services Limited Secretary • Accountant | 12 Jun 2006←6 Years→11 Dec 2012 | Active | |
| Airsys Communications Technology Limited Secretary • Accountant | 12 Jun 2006←9 Years→30 Sep 2015 | Active | |
| Foresolutions Limited Secretary • Accountant | 12 Jun 2006←6 Years→11 Dec 2012 | Active | |
