| Company | Timeline | Status | |
Hystar Hydraulics Limited Director • Director | 25 Sep 2006←8 Years→24 Dec 2014 | Dissolved | |
| Ma Hydraulics Limited Director • Director | 3 Sep 1998←16 Years→24 Dec 2014 | Active | |
| Hydrastore Limited Director • Hydraulic Engineer | 27 Sep 1991←1 Year 2 Months→30 Nov 1992 | Active | |
