| Company | Timeline | Status | |
| Absorpers Limited Director • Manager | 1 May 1995←10 Years→26 Jan 2006 | Active | |
| Ace Filtration Limited Director • General Manager | 1 Mar 1992←14 Years→27 Feb 2006 | Active | |
| Whitesnow Limited Director • Chartered Engineer | 31 Dec 1991←5 Years→15 Apr 1997 | Active | |
