Chien Hsing Announces Change in Representative Director Appointed by Corporate Director

Release Date: July 14, 2026 Statement Date: July 13, 2026 Statement Time: 16:15:46 Company Code: 2025 Company Name: Chien Hsing Co., Ltd. Subject: Announcement of Change in Representative Director Appointed by Corporate Director Applicable Clause: Clause 6 Factual Date: July 13, 2026

Details: 1. Date of Change: July 13, 2026 2. Corporate Name: Polydo Investment Co., Ltd. 3. Former Representative: Kuo Ying-Chien 4. Former Representative's Background: Deputy General Manager, Sales Division, Chien Hsing Stainless Steel Co., Ltd. 5. New Representative: Wu Fang-Yu 6. New Representative's Background: Manager, Administration Department, Kuantian Steel Co., Ltd. 7. Reason for Change: Change in corporate director's appointed representative 8. Original Term (e.g., xx/xx/xx to xx/xx/xx): June 14, 2024 – June 13, 2027 9. Effective Date of New Appointment: July 13, 2026 10. Other Matters to be Disclosed: None