| Company | Timeline | Status | |
| GWS Engineers Limited Director • Company Director | 1 Mar 2011←5 Years→13 Sep 2016 | Active | |
| GWS Vacuum Equipment Limited Secretary • Company Secretary | 1 Dec 1991←33 Years→Current | Active | |
| GWS Vacuum Equipment Limited Director • Company Secretary | 1 Dec 1991←24 Years→13 Sep 2016 | Active | |
| GWS Engineers Limited Secretary • Unreported | 1 Dec 1991←15 Years→27 Sep 2007 | Active | |
| GWS Engineers Limited Director • Company Secretary | 1 Dec 1991←15 Years→27 Sep 2007 | Active | |
