| Company | Timeline | Status | |
JC & DC Holdings Limited Director • Consultant | 2 Mar 2003←13 Years→21 Mar 2016 | Dissolved | |
| Air Techno Limited Director • Director | 1 Feb 1998←18 Years→21 Mar 2016 | Active | |
| Air Techno Limited Secretary • Unreported | 4 Oct 1995←7 Years→18 Sep 2003 | Active | |
| Aqua Protec Limited Secretary • Unreported | 9 Jun 1995←8 Years→19 Sep 2003 | Active | |
| Aqua Protec Limited Director • Director | 19 Jul 1991←24 Years→21 Mar 2016 | Active | |
