| Company | Timeline | Status | |
| Topper International Limited Director • Marketing Director | 1 Aug 2016←5 Years→31 Mar 2022 | Active | |
| C-Scope International Holdings Limited Director • Marketing Director | 1 Aug 2016←5 Years→31 Mar 2022 | Active | |
| Ultratone Scientific Instruments Limited Director • Marketing Director | 1 Aug 2016←5 Years→31 Mar 2022 | Active | |
| C. Scope International Limited Director • Marketing Director | 1 Aug 2016←5 Years→31 Mar 2022 | Active | |
