| Company | Timeline | Status | |
| Dataport Media Limited Director • Engineer | 29 Jul 2010←3 Years→1 Oct 2013 | Active | |
| A.S.T. Recruitment Limited Director • Managing Director | 8 Nov 2000←9 Years→4 Aug 2010 | Dissolved | |
AST Design & Engineering Limited Secretary • Engineer | 16 Feb 1994←1 Month→23 Mar 1994 | Dissolved | |
AST Design & Engineering Limited Director • Engineer | 16 Feb 1994←16 Years→4 Aug 2010 | Dissolved | |
