| Company | Timeline | Status | |
Water Quality Bureau Limited Secretary • Unreported | 23 May 2006←10 Years→24 Jan 2017 | Dissolved | |
| Waterpro Environmental Limited Director • Director | 6 Apr 2006←3 Years→6 Apr 2009 | Dissolved | |
| Waterpro Environmental Limited Secretary • Unreported | 14 Mar 2002←17 Years→30 Jul 2019 | Dissolved | |
