| Company | Timeline | Status | |
| Sigma Office Limited Secretary • It Consultant | 1 May 2002←19 Years→31 Jul 2021 | Active | |
| Sigma Office Limited Secretary • It Consultant (md) | 27 Nov 2000←18 Days→15 Dec 2000 | Active | |
| Sigma Office Limited Director • It Consultant (md) | 27 Nov 2000←20 Years→31 Jul 2021 | Active | |
