| Company | Timeline | Status | |
| Interpower International Limited Director • Engineer | 25 Nov 1996←10 Months→17 Oct 1997 | Dissolved | |
| Con Mech Engineers Limited Director • Works Director | 23 Jul 1991←1 Year→31 Jul 1992 | Active | |
| C.S.Du Mont Limited Director • Works Director | 23 Jul 1991←11 Months→11 Jul 1992 | Dissolved | |
