[Tongtai] Announcement of the Board of Directors' Approval of Q1 2026 Financial Report

1. Date of submission to the board of directors or resolution by the board of directors: 2026/04/27 2. Date of approval by the audit committee: 2026/04/27 3. Reporting period of financial report or self-calculated financial information for the year Start and end dates (YYYY/MM/DD~YYYY/MM/DD): 2026/01/01~2026/03/31 4. Cumulative operating revenue from January 1 to the end of this period (in thousands of NTD): 440905 5. Cumulative operating gross profit (loss) from January 1 to the end of this period (in thousands of NTD): 7429 6. Cumulative operating profit (loss) from January 1 to the end of this period (in thousands of NTD): -58626 7. Cumulative pre-tax net profit (loss) from January 1 to the end of this period (in thousands of NTD): -57615 8. Cumulative net profit (loss) for this period from January 1 to the end of this period (in thousands of NTD): -59778 9. Cumulative net profit (loss) attributable to owners of the parent company from January 1 to the end of this period (in thousands of NTD): -59778 10. Cumulative basic earnings (loss) per share from January 1 to the end of this period (in NTD): -0.69 11. Total assets at the end of the period (in thousands of NTD): 2017279 12. Total liabilities at the end of the period (in thousands of NTD): 1344759 13. Equity attributable to owners of the parent company at the end of the period (in thousands of NTD): 672,520 14. Other matters that should be specified: None.