| Company | Timeline | Status | |
| Minivent Company Limited(The) Director • Engineer | 6 Sep 1991←19 Years→14 Mar 2011 | Active | |
| Dennison & Lawrence Limited Director • Engineer | 6 Sep 1991←19 Years→14 Mar 2011 | Active | |
| Hatton Fans Limited Director • Engineer | 6 Sep 1991←19 Years→14 Mar 2011 | Active | |
