| Company | Timeline | Status | |
| Siderise Insulation Limited Director • Engineer | 10 Apr 1992←4 Years→31 Dec 1996 | Active | |
| Siderise Limited Director • Engineer | 31 Dec 1991←5 Years→31 Dec 1996 | Active | |
| Siderise (Holdings) Limited Director • Engineer | 23 Aug 1991←5 Years→31 Dec 1996 | Active | |
| Siderise (Special Products) Limited Director • Engineer | 30 Jun 1991←5 Years→31 Dec 1996 | Active | |
| Lamatherm Products Limited Director • Engineer | 10 Apr 1991←5 Years→31 Dec 1996 | Active | |
