| Company | Timeline | Status | |
| Interplandata Limited Secretary • Technical Illustrator | 13 Feb 1995←30 Years→Current | Active | |
| Interplandata Limited Director • Technical Author | 13 Feb 1995←30 Years→Current | Active | |
| Cleargain Limited Director • Technical Illustrator | 30 Sep 1991←11 Years→4 Aug 2003 | Active | |
