| Company | Timeline | Status | |
| Airducts Holdings Limited Secretary • Unreported | 15 Jun 2006←19 Years→Current | Active | |
| Airducts Engineering Limited Secretary • Unreported | 15 Jun 2006←19 Years→Current | Active | |
| Airducts Design Limited Secretary • Unreported | 9 Feb 2001←24 Years→Current | Active | |
