| Prosperity Investment Holdings Limited | 00310 | 21-May-21 | 10-Jun-21 | MD | | |
| Prosperity Investment Holdings Limited | 00310 | 05-Aug-10 | 21-May-21 | Dep Ch | | |
| Blue River Holdings Limited | 00498 | 01-Apr-21 | 17-May-21 | ED | | |
| Blue River Holdings Limited | 00498 | 26-Sep-11 | 18-Jan-21 | Ch | | |
| China National Building Material Company Limited | 03323 | 27-Jan-06 | 15-Nov-11 | INED | | |
| Blue River Holdings Limited | 00498 | 22-Jul-05 | 26-Sep-11 | MD | | |
| Prosperity Investment Holdings Limited | 00310 | 30-Dec-09 | 05-Aug-10 | Ch | | |
| Prosperity Investment Holdings Limited | 00310 | 09-Nov-09 | 30-Dec-09 | Non-Executive Director | | |
| Pt International Development Corporation Limited | 00372 | 18-Feb-97 | 12-Sep-05 | Dep Ch | | |
| Blue River Holdings Limited | 00498 | 28-May-93 | 22-Jul-05 | Dep Ch | | |
| Csc Holdings Limited (Hk) | 00235 | 10-Jul-01 | 11-Jun-03 | Alt ED | | |
| Mongolia Energy Corporation Limited | 00276 | 12-Aug-99 | 09-Jun-03 | ED | | |
| Csc Holdings Limited (Hk) | 00235 | 11-Oct-00 | 10-Jul-01 | ED | | |
| Mongolia Energy Corporation Limited | 00276 | 23-Sep-98 | 12-Aug-99 | Ch | | |
| Mongolia Energy Corporation Limited | 00276 | 03-Oct-97 | 23-Sep-98 | Dep Ch | | |
| Aidigong Maternal & Child Health Limited (Bm) | 00286 | 02-Jul-94 | 02-Jul-96 | MD | | |
| Aidigong Maternal & Child Health Limited (Bm) | 00286 | 27-Jan-92 | 02-Jul-94 | ED | | |
| National United Resources Holdings Limited | 00254 | 30-Jul-92 | 11-Mar-93 | Dir | | |
