| Company | Timeline | Status | |
| NTN Enviro Ltd Director • Engineer | 30 Apr 1999←25 Years→27 Aug 2024 | Dissolved | |
| Energy Metering Technology Limited Director • Energy Consultant | 31 Mar 1991←12 Years→15 Mar 2004 | Active | |
| Energy Metering Technology Limited Secretary • Unreported | 31 Mar 1991←12 Years→26 May 2003 | Active | |
