| Company | Timeline | Status | |
| Mantis Piping Group Limited Director • Unreported  | 13 Dec 2000←5 Years→19 Jun 2006  | Active  | |
| Eco-Valve Limited Director • Managing Director  | 17 Aug 1998←7 Years→19 Jun 2006  | Dissolved  | |
| P.J. Pipe & Valve Co. Limited Director • Chairman  | 23 Jul 1991←14 Years→12 Dec 2005  | Active  | |
