| Company | Timeline | Status | |
| H.L.Instruments Limited Director • Accountant  | 1 May 1991←18 Years→23 Mar 2010  | Active  | |
| H.L.Instruments Limited Secretary • Unreported  | 1 May 1991←18 Years→23 Mar 2010  | Active  | |
| Electro Mechanical Systems Limited Director • Accountant  | 18 Feb 1991←19 Years→23 Mar 2010  | Active  | |
| Electro Mechanical Systems Limited Secretary • Unreported  | 18 Feb 1991←19 Years→23 Mar 2010  | Active  | |
