| Company | Timeline | Status | |
| One Oak Management Company Limited Secretary • Retired | 8 Mar 2004←2 Years→13 Mar 2006 | Active | |
| One Oak Management Company Limited Director • Retired | 8 Mar 2004←3 Years→15 Nov 2007 | Active | |
| One Oak Management Company Limited Director • Retired | 20 Feb 1995←4 Years→1 Mar 1999 | Active | |
| One Oak Management Company Limited Director • Teacher | 23 Apr 1991←3 Years→20 Feb 1995 | Active | |
| One Oak Management Company Limited Secretary • Retired | 23 Apr 1991←3 Years→20 Feb 1995 | Active | |
