| Company | Timeline | Status | |
| Cleamax Engineering Limited Director • Engineer | 10 Dec 2002←9 Years→18 Jul 2012 | Active | |
| Cleamax Engineering Limited Secretary • Engineer | 10 Dec 2002←14 Years→30 Oct 2017 | Active | |
| Lemsford Metal Products (1982) Limited Director • Engineer | 31 Dec 1990←34 Years→Current | Active | |
| Lemsford Metal Products (1982) Limited Secretary • Unreported | 31 Dec 1990←31 Years→30 Nov 2022 | Active | |
