[China Steel Structure] Announcement of the Election Results for Directors (Including Independent Directors) at the 2026 Annual General Meeting

1. Date of change: 2026/05/28. 2. Category of personnel: Corporate Director, Independent Director. 3. Previous incumbents: (1) Director: Chen Rui-teng (Representative of China Steel Corp.), (2) Director: Huang Yuan-zhang (Representative of China Steel Corp.), (3) Director: Liu Hong-yi (Representative of China Steel Corp.), (4) Director: Liang Nai-wen (Representative of Dragon Steel Corp.), (5) Director: Tseng Wen-liang (Representative of China Steel Chemical Corp.), (6) Director: Lin Dao-peng (Representative of IHI Corp.), (7) Director: Guo Zhi-hao (Representative of Hong-Bo Steel), (8) Director: Chen Zhe-sheng (Representative of Shang-En Investment), (9) Independent Director: Li Hua-deng, (10) Independent Director: Li Xiu-ling, (11) Independent Director: Luo Wei. 4. Resumes of previous incumbents: (1) Chen Rui-teng: Chairman of China Steel Structure Co., (2) Huang Yuan-zhang: President of China Steel Structure Co., (3) Liu Hong-yi: Executive VP and Director of China Steel Corp., (4) Liang Nai-wen: Chairman of Dragon Steel Corp., (5) Tseng Wen-liang: President of China Steel Chemical Corp., (6) Lin Dao-peng: Consultant at Taiwan IHI Corp., (7) Guo Zhi-hao: Special Assistant to the Chairman of Hong-Bo Steel, (8) Chen Zhe-sheng: Chairman of Berlin Co., (9) Li Hua-deng: Retired Professor, Dept. of Mechanical Engineering, NCKU, (10) Li Xiu-ling: Retired Assistant Professor, Dept. of Accounting, I-Shou University, (11) Luo Wei: Member of the Procurement Appeal Review Committee, Public Construction Commission. 5. New incumbents: (1) Director: Chen Rui-teng (Rep. of China Steel), (2) Director: Huang Yuan-zhang (Rep. of China Steel), (3) Director: Liu Hong-yi (Rep. of China Steel), (4) Director: Liang Nai-wen (Rep. of Dragon Steel), (5) Director: Tseng Wen-liang (Rep. of China Steel Chemical), (6) Director: (Yu) Jun-rong (Rep. of Taiwan Mask Corp.), (7) Director: Guo Zhi-hao (Rep. of Hong-Bo Steel), (8) Director: Chen Zhe-sheng (Rep. of Shang-En Investment), (9) Independent Director: Jiang Jia-ling, (10) Independent Director: Chen Jin-fang, (11) Independent Director: Huang Zhong-fa. 6. Resumes of new incumbents: (1) Chen Rui-teng: Chairman of China Steel Structure Co., (2) Huang Yuan-zhang: President of China Steel Structure Co., (3) Liu Hong-yi: Executive VP and Director of China Steel Corp., (4) Liang Nai-wen: Chairman of Dragon Steel Corp., (5) Tseng Wen-liang: President of China Steel Chemical Corp., (6) (Yu) Jun-rong: Chairman of Grandtech C&S, (7) Guo Zhi-hao: Special Assistant to the Chairman of Hong-Bo Steel, (8) Chen Zhe-sheng: Chairman of Berlin Co., (9) Jiang Jia-ling: Retired CPA, Deloitte Taiwan, (10) Chen Jin-fang: Director of Chang-Sheng Law Firm, (11) Huang Zhong-fa: Distinguished Professor, Dept. of Civil Engineering, NKUST. 7. Change status: Term expiration. 8. Reason: Re-election upon term expiration. 9. Shareholdings at time of election: China Steel Corp. 66,487,844 shares, Dragon Steel Corp. 4,217,000 shares, China Steel Chemical Corp. 600,069 shares, Taiwan Mask Corp. 14,299,000 shares, Hong-Bo Steel 3,899,000 shares, Shang-En Investment 496,000 shares, Jiang Jia-ling 0, Chen Jin-fang 0, Huang Zhong-fa 0. 10. Previous term: 2023/05/31~2026/05/30. 11. Effective date: 2026/05/28. 12. Change ratio: N/A. 13. Independent director change ratio: N/A. 14. Supervisor change ratio: N/A. 15. Change of over 1/3 of directors: No. 16. Other: None.