| Company | Timeline | Status | |
| Willhelm Limited Secretary • Company Director | 4 Feb 1997←5 Years→1 Oct 2002 | Active | |
| Willhelm Limited Director • Company Director | 4 Feb 1997←5 Years→1 Oct 2002 | Active | |
| S.T.B. Engineering Limited Director • Company Director | 4 Feb 1997←5 Years→1 Oct 2002 | Active | |
| S.T.B. Engineering Limited Secretary • Company Director | 4 Feb 1997←5 Years→1 Oct 2002 | Active | |
