| Company | Timeline | Status | |
| Alcosa Properties Limited Director • Engineer | 14 Sep 2006←19 Years→Current | Active | |
| Alcosa Properties Limited Secretary • Unreported | 14 Sep 2006←19 Years→Current | Active | |
| Alcosa Engineering Limited Director • Unreported | 13 Aug 2002←23 Years→Current | Active | |
| Alcosa Engineering Limited Secretary • Director | 13 Aug 2002←23 Years→Current | Active | |
