| Company | Timeline | Status | |
| Palace Limited Director • Unreported | 13 Jan 2014←12 Years→Current | Active | |
| Fort Telecommunications Limited Director • Unreported | 7 Feb 1998←7 Years→27 Oct 2005 | Active | |
| Fort Communications Technology Limited Director • Unreported | 27 May 1997←8 Years→27 Oct 2005 | Active | |
| Fort Telecommunications Limited Director • Unreported | 6 Feb 1995←2 Years 10 Months→5 Dec 1997 | Active | |
| Fort Communications Technology Limited Director • Consultant | 21 Nov 1991←11 Months→21 Oct 1992 | Active | |
| Palace Limited Secretary • Unreported | 5 Aug 1991←16 Years→30 Nov 2007 | Active | |
| Fort Communications Technology Limited Director • Unreported | 1 Jan 1970←22 Years→21 Oct 1992 | Active | |
