Tongtai Announces Changes in Financial Officer, Accounting Officer, and Acting Spokesperson

1. Category of Personnel Change (please specify spokesperson, acting spokesperson, key operational executives such as CEO, COO, CMO, CSO, financial officer, accounting officer, corporate governance officer, CISO, R&D head, internal audit head, or litigation/non-litigation agent): Financial Officer, Accounting Officer, Acting Spokesperson

2. Date of Change: 115/07/27

3. Former Officer's Name, Title, and Resume: Accounting Officer, Financial Officer, Acting Spokesperson: Tsai Wen-Cheng / Director of Finance and Accounting Department / Accounting Officer, Financial Officer, Acting Spokesperson

4. New Officer's Name, Title, and Resume: Financial Officer, Acting Spokesperson: Sun Mao-Lun / Deputy Financial Director / Former Financial Director at TECO Electric and Machinery Co., Ltd. Accounting Officer: None

5. Nature of Change (please enter 'resignation', 'job reassignment', 'layoff', 'retirement', 'death', 'new appointment', or 'dismissal'): Resignation

6. Reason for Change: Resignation

7. Effective Date: 115/07/27

8. Other Matters to be Disclosed: The appointment of the new Accounting Officer will be announced separately after approval by the upcoming board of directors.