[Daxin Materials] Announcement on the Appointment of Chairman and Vice Chairman by the Board

1. Date of Board Resolution or Change Date: 2026/05/22 2. Personnel Category: Chairman and Vice Chairman 3. Name of Predecessor: (1) Chairman: Lin Zheng-Yi (2) Vice Chairman: Guo Zong-Xin 4. Previous Position/Background: (1) Chairman: Lin Zheng-Yi / Chairman of Daxin Materials (2) Vice Chairman: Guo Zong-Xin / Vice Chairman of Daxin Materials 5. Name of New Appointee: (1) Chairman: Lin Zheng-Yi (2) Vice Chairman: Guo Zong-Xin 6. New Position/Background: (1) Chairman: Lin Zheng-Yi / Chairman of Daxin Materials (2) Vice Chairman: Guo Zong-Xin / Vice Chairman of Daxin Materials 7. Nature of Change: Expiration of term 8. Reason for Change: Full re-election of board members 9. Effective Date: 2026/05/22 10. Other Disclosures: None