| Company | Timeline | Status | |
| Gibson Centri-Tech Limited Secretary • Unreported | 15 Dec 1991←4 Years→4 Jul 1996 | Active | |
| Gibson Centri-Tech Limited Director • Engineer | 15 Dec 1991←18 Years→20 Sep 2010 | Active | |
| Centri-Tech Limited Director • Engineer | 28 Feb 1991←19 Years→20 Sep 2010 | Active | |
