| Company | Timeline | Status | |
| Gentra Limited Director • Company Chairman | 29 Sep 1993←2 Years 9 Months→26 Jun 1996 | Dissolved | |
| Gentra Holdings Company Director • Company Chairman | 2 Sep 1993←2 Years 9 Months→26 Jun 1996 | Dissolved | |
| World Gold Council,An Association Director • Chairman | 25 Feb 1988←5 Years→12 Jun 1993 | Active | |
