| Company | Timeline | Status | |
| Petrostem (UK) Limited Secretary • Unreported | 22 Jun 2004←4 Years→9 Oct 2008 | Dissolved | |
| Maxtube Limited Secretary • Unreported | 22 Jun 2004←4 Years→24 Nov 2008 | Active | |
| Petroleum Pipe Company Limited Secretary • Unreported | 22 Jun 2004←4 Years→9 Oct 2008 | Dissolved | |
