6271 Tong Hsing Electronics Announces Board Changes at Key Subsidiary TONG HSING ELECTRONICS PHILS. INC.

Announcement Date: June 27, 2026 Statement Date: June 26, 2026 Statement Time: 17:53:18 Company Code: 6271 Company Name: Tong Hsing Electronics Subject: Announcement on behalf of key subsidiary "TONG HSING ELECTRONICS PHILS. INC." regarding shareholder and board approval of director changes Applicable Clause: Clause 6 Event Date: June 26, 2026

Details: 1. Date of Change: June 26, 2026 2. Type of Change (select from: corporate director, corporate supervisor, independent director, individual director, individual supervisor): Individual Director 3. Former Directors’ Titles and Names: Director: Lai Hsi-Hu Director: Lu Yung-Hung Director: Roberto Jose Castillo Director: Jocelyn C. Francia Director: Huang Chia-Li

4. Former Directors’ Resumes: Director: Lai Hsi-Hu / Chairman, TONG HSING ELECTRONICS PHILS. INC. Director: Lu Yung-Hung / General Manager, TONG HSING ELECTRONICS PHILS. INC. Director: Roberto Jose Castillo / Director, TONG HSING ELECTRONICS PHILS. INC. Director: Jocelyn C. Francia / Director, TONG HSING ELECTRONICS PHILS. INC. Director: Huang Chia-Li / Director, TONG HSING ELECTRONICS PHILS. INC.

5. New Directors’ Titles and Names: Director: Lai Hsi-Hu Director: Lu Yung-Hung Director: Roberto Jose Castillo Director: Jocelyn C. Francia Director: Huang Chia-Li

6. New Directors’ Resumes: Director: Lai Hsi-Hu / Chairman, TONG HSING ELECTRONICS PHILS. INC. Director: Lu Yung-Hung / General Manager, TONG HSING ELECTRONICS PHILS. INC. Director: Roberto Jose Castillo / Director, TONG HSING ELECTRONICS PHILS. INC. Director: Jocelyn C. Francia / Director, TONG HSING ELECTRONICS PHILS. INC. Director: Huang Chia-Li / Director, TONG HSING ELECTRONICS PHILS. INC.

7. Nature of Change (select from: resignation, removal, term expiration, death, new appointment): Term Expiration 8. Reason for Change: Original term expired; re-elected for another term 9. Number of Shares Held by New Directors at Time of Appointment: Director: Lai Hsi-Hu – 1 share Director: Lu Yung-Hung – 1 share Director: Roberto Jose Castillo – 1 share Director: Jocelyn C. Francia – 1 share Director: Huang Chia-Li – 1 share

10. Previous Term (e.g., 06/27/2025 ~ 06/25/2026): June 27, 2025 ~ June 25, 2026 11. Effective Date of New Appointment: June 26, 2026 12. Director Turnover Rate During Same Term: Not applicable (full board re-election due to term expiration) 13. Independent Director Turnover Rate During Same Term: Not applicable (full board re-election due to term expiration) 14. Supervisor Turnover Rate During Same Term: Not applicable 15. Did more than one-third of directors change? No 16. Additional Notes (if the entity is a publicly issued company, this announcement also qualifies under Article 7, Clause 6 of the Enforcement Rules of the Securities and Exchange Act as a material event affecting shareholders’ rights or securities prices): Shareholder meeting and board meeting were held on the same day