| Company | Timeline | Status | |
| Ultra Analog Limited Director • Electronics Design Engineer | 29 Sep 2015←10 Years→Current | Active | |
| Ua Group Limited Director • Design Engineer | 27 Apr 2015←9 Years→21 May 2024 | Dissolved | |
| AMS Industries Limited Director • Electronics Engineer | 2 May 2013←12 Years→Current | Active | |
