| Organisation | Role | Activity | From | Until |
|---|---|---|---|---|
| TAI TAK SECURITIES (ASIA) LIMITED | Rep | Dealing in securities | 2011-05-20 | - |
| OnePlatform Securities Limited | Rep | Dealing in securities | 2010-11-09 | 2011-05-18 |
| TAI TAK SECURITIES (ASIA) LIMITED | Rep | Dealing in securities | 2010-10-29 | 2010-11-03 |
| LAI PO HUNG & COMPANY LIMITED | Rep | Dealing in securities | 2007-06-20 | 2010-10-29 |
| WO FUNG SECURITIES COMPANY LIMITED | Rep | Dealing in securities | 2006-11-24 | 2007-06-04 |
| WING SANG SECURITIES COMPANY LIMITED | Rep | Advising on corporate finance | 2003-04-01 | 2003-12-17 |
| Rep | Advising on securities | 2003-04-01 | 2003-12-17 | |
| Rep | Asset management | 2003-04-01 | 2003-12-17 | |
| Rep | Dealing in securities | 2003-04-01 | 2006-05-31 |