| Company | Timeline | Status | |
| DDC It Limited Secretary • Unreported | 27 Jun 2007←18 Years→Current | Active | |
| DDC Systems Limited Director • Director | 20 Mar 2006←19 Years→Current | Active | |
| DDC Systems Limited Secretary • Unreported | 20 Mar 2006←19 Years→Current | Active | |
| DDC Recruit Limited Secretary • Unreported | 5 Apr 2004←21 Years→Current | Active | |
| Drafting And Design Centre Limited Director • Director | 11 Sep 2003←22 Years→Current | Active | |
| Drafting And Design Centre Limited Secretary • Director | 11 Sep 2003←22 Years→Current | Active | |
| DDC Precision Limited Secretary • Unreported | 12 Aug 1991←34 Years→Current | Active | |
