| HSBC Investments (Hong Kong) Limited | - | 2008-06-02 |
| HSBC ASSET MANAGEMENT (HONG KONG) LIMITED | - | 2005-04-29 |
| HSBC ASSET MANAGEMENT HONG KONG LIMITED | - | 1999-11-01 |
| WARDLEY INVESTMENT SERVICES (HONG KONG) LIMITED | - | 1994-02-28 |
| HSBC ASSET MANAGEMENT HONG KONG LIMITED | - | 1994-02-08 |
| WARDLEY INVESTMENT SERVICES (HONG KONG) LIMITED | - | 1993-12-23 |
| WARDLEY INVESTMENT SERVICES LIMITED | - | 1985-12-10 |
| WARDLEY VICKERS LIMITED | - | 1976-06-04 |
| HSBC ASSET MANAGEMENT HONG KONG LIMITED | - | 1999-10-12 |
| WARDLEY INVESTMENT SERVICES (HONG KONG) LIMITED | - | 1994-02-01 |