TONG TAI: Announcement of Change in Corporate Governance Officer

1. Type of personnel change (please enter spokesperson, acting spokesperson, important operational executive (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): Corporate Governance Officer 2. Date of change: 2026/05/13 3. Name, title, and brief resume of former officer: (1) Corporate Governance Officer: Yang Qi-Rui / Senior Specialist 4. Name, title, and brief resume of new officer: (1) Corporate Governance Officer: Guo Pei-Zhen / Manager 5. Reason for change (please enter "resignation", "job adjustment", "layoff", "retirement", "death", "new appointment" or "dismissal"): Job adjustment 6. Reason for change: Job adjustment 7. Effective date: 2026/05/13 8. Other matters to be specified: None