| BDO (China) | 28-Sept-23 | | | |
| Pan-China CPA LLP | 15-Jun-12 | 28-Sept-23 | | Requirement of the Administrative Measures that a state-owned enterprise shall not, in principle, continuously appoint the same accounting firm for more than 8 years, and Pan-China Certified Public Accountants LLP has provided audit services to the Company for 12 years. |
| Pan-China CPA LLP | 15-Jun-12 | 06-Sept-23 | | Pan-China has provided audit services to the Company for 12 years, which does not meet the requirement of the Administrative Measures on the tenure of service. |
| Pan-China (H.K.) CPA | 27-Jan-11 | 26-Apr-12 | | Historical transition (details not available in archive) |
| ShineWing (Hong Kong) | 16-Feb-07 | 06-Dec-10 | | Historical transition (details not available in archive) |
| Deloitte Hong Kong | 21-Feb-06 | 28-Dec-06 | | Historical transition (details not available in archive) |
