【Chang Tai】Announcement on Changes in the Company's Financial Officer and Corporate Governance Officer

1. Type of personnel change (please enter spokesperson, acting spokesperson, important operational managers (e.g., CEO, COO, CMO, CSO), financial officer, accounting officer, corporate governance officer, chief information security officer, R&D officer, internal audit officer, or litigation and non-litigation agent): Financial Officer, Corporate Governance Officer 2. Date of change: 2026/05/07 3. Name, rank, and brief resume of the former incumbent: Corporate Governance Officer (acting): Liu Xiuyue / Vice President of the Company; Financial Officer (acting): Lin Meijun / Assistant Manager of the Company 4. Name, rank, and brief resume of the new incumbent: Corporate Governance Officer: Liu Xiuyue / Vice President of the Company; Financial Officer: Lin Meijun / Assistant Manager of the Company 5. Details of the change (please enter "resignation", "position adjustment", "severance", "retirement", "death", "new appointment" or "dismissal"): Position adjustment 6. Reason for change: Position adjustment 7. Effective date: 2026/05/07 8. Other matters to be specified: Approved by the Board of Directors on 2026/05/07 Keywords: Material Information