| Company | Timeline | Status | |
| Sicofin International Limited Director • Engineer | 31 Oct 1991←11 Years→31 Dec 2002 | Active | |
| Dana Consultants Limited Director • Engineer | 31 Oct 1991←8 Years→1 May 2000 | Active | |
| Punshon Limited Director • Engineer | 31 Oct 1991←11 Years→31 Dec 2002 | Active | |
