| Company | Timeline | Status | |
| Thermal Hazard Technology Limited Director • Scientist | 13 Mar 1998←27 Years→30 Nov 2025 | Active | |
| Heath Scientific Company Limited Director • Unreported | 13 Mar 1998←27 Years→30 Nov 2025 | Active | |
| Thermal Hazard Technology Limited Director • Scientist | 18 Nov 1994←1 Month→31 Dec 1994 | Active | |
