| Company | Timeline | Status | |
| YTF Management Limited Director • Director | 26 Feb 2009←9 Years→1 Dec 2018 | Active | |
| Everest Biotech Limited Secretary • Managing Director | 5 Aug 2002←3 Years→30 Sep 2005 | Active | |
| Ludger Limited Director • Managing Director | 1 Jul 2002←3 Years→16 Sep 2005 | Active | |
| Ludger Limited Secretary • Managing Director | 1 Jul 2002←3 Years→16 Sep 2005 | Active | |
| Biotechgen Limited Secretary • Managing Director | 30 Jun 2002←3 Years→23 Sep 2005 | Active | |
