| Company | Timeline | Status | |
| Whiteleaf Golf Club,Limited(The) Director • Engineer | 11 Mar 2014←2 Years 2 Months→1 Jun 2016 | Active | |
| DMC Consulting Limited Director • Engineer | 1 Mar 2008←16 Years→21 May 2024 | Dissolved | |
| Whiteleaf Golf Club,Limited(The) Director • Engineer | 29 Feb 2008←3 Years→25 Oct 2011 | Active | |
| T.F. & P. (Management) Limited Director • Project Manager | 12 Jan 1992←→6 Jan 1992 | Active | |
