| Company | Timeline | Status | |
| Tonkin Products Limited Director • Director | 22 Jan 2003←22 Years→Current | Active | |
| Tonkin Products Limited Secretary • Director | 22 Jan 2003←6 Years→1 May 2009 | Active | |
| Tonkin Trading Limited Director • Trade & Commodity Consultant | 12 Apr 1999←26 Years→Current | Active | |
