| Company | Timeline | Status | |
| Perry & Bell Limited Director • Architect | 12 Oct 1999←26 Years→Current | Active | |
| Perry & Bell Limited Secretary • Architect | 12 Oct 1999←4 Years→3 Nov 2003 | Active | |
| D.P.Development Company Limited Director • Architect | 1 Mar 1994←31 Years→Current | Active | |
| D.P.Development Company Limited Secretary • Architect | 2 Jan 1992←33 Years→Current | Active | |
