| Company | Timeline | Status | |
| T.P.R. Management Company Limited Director • Research Scientist | 10 Jan 2003←7 Months→1 Sep 2003 | Active | |
| T.P.R. Management Company Limited Secretary • Engineer | 20 May 2000←5 Months→23 Oct 2000 | Active | |
| T.P.R. Management Company Limited Director • Research Scientist | 6 Aug 1998←2 Years 9 Months→30 May 2001 | Active | |
