5234 Daxin Materials

Report Date: 2026/05/23. Announcement Date: 2026/05/22. Company Code: 5234. Company Name: Daxin Materials. Subject: Board resolution to appoint members of the Sustainability Committee. Fact Date: 2026/05/22. Explanation: 1. Change date: 2026/05/22. 2. Committee name: Sustainability Committee. 3. Former members: Kuo Tsung-hsin, Chuang Feng-yu, Chiu Feng-liang, Liu Yen-chen. 4. Former profiles: Kuo (Vice Chairman), Chuang (GM), Chiu (Deputy GM), Liu (CFO). 5. New members: Liu Yen-chen, Chuang Feng-yu, Chiu Feng-liang. 6. New profiles: Liu (Director & CFO), Chuang (GM), Chiu (Deputy GM). 7. Status: Term expired. 8. Reason: Reappointment upon term expiration. 9. Original term: 2025/08/11 ~ 2026/06/14. 10. Effective date: 2026/05/22. 11. Other notes: None.