| Company | Timeline | Status | |
| Opera Holland Park Director • Industrialist | 6 Dec 2006←7 Years→9 Dec 2013 | Active | |
| Rediweld Holdings Limited Director • Unreported | 22 Jul 2003←22 Years→Current | Active | |
| Redivac Limited Director • Unreported | 25 Sep 2002←23 Years→Current | Active | |
| Iseki Vacuum Systems Limited Director • Unreported | 30 May 2002←23 Years→Current | Active | |
Advanced Fluid Systems Limited Director • Industrialist | 15 Jun 1998←3 Months→15 Sep 1998 | Dissolved | |
| Rediweld Rubber & Plastics Limited Director • Unreported | 1 Jan 1970←55 Years→Current | Active | |
| Rediweld Limited Director • Unreported | 1 Jan 1970←55 Years→Current | Active | |
| Vistaplan International Limited Director • Unreported | 1 Jan 1970←55 Years→Current | Active | |
