Sun I Chemical Announces Board Resolution to Appoint 6th Remuneration Committee Members

1. Date of change: 2026/05/20 2. Name of functional committee: Remuneration Committee 3. Names of former members: Independent Director/Chen Ting-Kuo, Independent Director/Ma Chen-Chi, Independent Director/Wu Hsiao-Yen, Independent Director/Peng Yu-Min 4. Resumes of former members: Chen Ting-Kuo/Independent Director of the Company, Ma Chen-Chi/Independent Director of the Company, Wu Hsiao-Yen/Independent Director of the Company, Peng Yu-Min/Vice President of Industrial Technology Research Institute 5. Names of new members: Independent Director/Chen Ting-Kuo, Independent Director/Ma Chen-Chi, Independent Director/Peng Yu-Min, Independent Director/Su Ping-Chang 6. Resumes of new members: Chen Ting-Kuo/Independent Director of the Company, Ma Chen-Chi/Independent Director of the Company, Peng Yu-Min/Independent Director of the Company, Su Ping-Chang/Independent Director of Thinking Electronic Industrial Co., Ltd. 7. Nature of change: Term expired 8. Reason for change: In line with a full re-election, the Board of Directors has re-appointed the members of the Remuneration Committee. 9. Original term of office: 2023/05/17 - 2026/05/16 10. Effective date of new appointment: 2026/05/20 11. Other items to be specified: None.