| Company | Timeline | Status | |
| D.S. Metals Limited Director • None | 9 Aug 2016←9 Years→Current | Active | |
| D.K.L. Metals Limited Director • Director | 30 Jun 2016←7 Years→23 Oct 2023 | Active | |
| Itri Innovation Limited Director • Unreported | 4 Jan 2005←20 Years→Current | Active | |
| International Tin Association Ltd Director • Unreported | 9 Jan 1995←30 Years→Current | Active | |
| Wildshaw Limited Director • Unreported | 1 Jan 1970←55 Years→Current | Active | |
