| Company | Timeline | Status | |
| Stephenson Halliday Limited Director • Chartered Town Planner | 30 Mar 2001←18 Years→14 Aug 2019 | Active | |
| Greenriggs Management Co. Ltd Director • Partner Geologist Planner | 10 Apr 1997←4 Years→28 Sep 2001 | Active | |
| Greenriggs Management Co. Ltd Secretary • Partner Geologist Planner | 10 Apr 1997←10 Months→13 Feb 1998 | Active | |
