| Company | Timeline | Status | |
| Premax Engineering Limited Secretary • Unreported | 14 May 1992←33 Years→Current | Active | |
| Mason Crawford (Holdings) Limited Secretary • Unreported | 14 May 1991←34 Years→Current | Active | |
| Mason Crawford (Holdings) Limited Director • Director | 14 May 1991←34 Years→Current | Active | |
| Transformotor Limited Director • Housewife | 14 May 1991←18 Years→22 Apr 2010 | Active | |
| Transformotor Limited Secretary • Unreported | 14 May 1991←18 Years→22 Apr 2010 | Active | |
| Premax Engineering Limited Director • Unreported | 1 Jan 1970←55 Years→Current | Active | |
