| Company | Timeline | Status | |
| Westcut Engineering Limited Director • Engineer | 9 Apr 2002←23 Years→Current | Active | |
| Kristek (Holdings) Limited Director • Engineer | 19 Oct 1995←8 Years→1 Jul 2004 | Active | |
| Kristek Precision Limited Director • Engineer | 10 Apr 1991←13 Years→1 Jul 2004 | Active | |
