| Company | Timeline | Status | |
| White Oak Management Co. Limited Director • Director | 14 Nov 1995←6 Years→7 Feb 2002 | Active | |
| Dormant LST Limited Secretary • Unreported | 31 Dec 1991←2 Years 5 Months→22 Jun 1994 | Dissolved | |
| Dormant LST Limited Director • Director | 31 Dec 1991←5 Years→22 Sep 1997 | Dissolved | |
| Guideline Lift Services Limited Secretary • Unreported | 31 Oct 1991←2 Years 7 Months→22 Jun 1994 | Active | |
| Guideline Lift Services Limited Director • Director | 31 Oct 1991←5 Years→22 Sep 1997 | Active | |
