| Company | Timeline | Status | |
| Zetron INC Director • Engineer | 2 Sep 1993←24 Years→12 Jul 2018 | Converted/Closed | |
| Zetron INC Secretary • Engineer | 7 May 1990←1 Month→5 Jul 1990 | Converted/Closed | |
| Zetron Eagle Limited Director • Engineer | 1 Jan 1970←40 Years→30 Nov 2010 | Active | |
