| Company | Timeline | Status | |
| ACS Environmental Limited Director • Technical Director  | 11 Feb 2008←13 Years→8 Jun 2021  | Active  | |
| ACS Environmental Limited Secretary • Technical Director  | 11 Feb 2008←13 Years→8 Jun 2021  | Active  | |
| Alternative Cooling Solutions Limited Director • Installation Engineer  | 15 Jun 2001←24 Years→Current  | Active  | |
