| Company | Timeline | Status | |
| Groffa Crag Management Company Ltd Director • Quality Manager | 3 Sep 2007←18 Years→Current | Active | |
| Groffa Crag Management Company Ltd Secretary • Quality Manager | 3 Sep 2007←18 Years→Current | Active | |
| Groffa Crag Management Company Ltd Secretary • Quality Manager | 3 Sep 2007←17 Years→28 Jan 2025 | Active | |
