| Organisation | Role | Activity | From | Until |
|---|---|---|---|---|
| CITIC Securities Brokerage (HK) Limited | Rep | Dealing in securities | 2019-09-18 | - |
| KO'S BROTHER SECURITIES COMPANY LIMITED | Rep | Dealing in securities | 2003-07-08 | 2019-09-01 |
| Ko's Brother (Securities) Company | Rep | Advising on corporate finance | 2003-04-01 | 2003-05-28 |
| Rep | Advising on securities | 2003-04-01 | 2003-05-28 | |
| Rep | Asset management | 2003-04-01 | 2003-05-28 | |
| Rep | Dealing in securities | 2003-04-01 | 2003-06-20 |