| Company | Timeline | Status | |
| Isothermal Technology Limited Director • Productions Director | 31 Aug 1992←33 Years→Current | Active | |
| Isothermal Technology Limited Secretary • Unreported | 31 Aug 1992←33 Years→Current | Active | |
| Thermal Developments International Limited Secretary • Unreported | 31 Aug 1991←17 Years→11 May 2009 | Active | |
