| Company | Timeline | Status | |
| MV Environmental Limited Director • Scientist | 16 Feb 2011←14 Years→7 Oct 2025 | Dissolved | |
| Hudol Thermal Limited Director • Chemist | 14 Jul 2003←2 Months→10 Oct 2003 | Active | |
| Decus Research Limited Director • Chemist | 14 Jul 2003←2 Months→10 Oct 2003 | Active | |
| Excal Limited Director • Chemist | 18 Oct 2001←1 Year 11 Months→10 Oct 2003 | Active | |
