【Eternal Materials】Announcement of the Collecting and Depository Banks for the Company's 2nd Domestic Unsecured Convertible Bonds

1. Date of occurrence: 2026/05/18 2. Company name: Eternal Materials Industry Co., Ltd. 3. Relationship with the company (input 'this company' or 'subsidiary'): This company 4. Mutual shareholding ratio: Not applicable 5. Reason for occurrence: In accordance with Article 9, Paragraph 1, Subparagraph 2 of the 'Regulations Governing the Offering and Issuance of Securities by Securities Issuers', the company announces matters concerning the collecting and depository banks for its 2nd domestic unsecured convertible bonds. 6. Countermeasures: None 7. Other remarks (If the subject of the event or resolution is a public company or above, this material information also complies with Article 7, Subparagraph 9 of the Enforcement Rules of the Securities and Exchange Act, concerning matters that have a significant impact on shareholders' equity or securities prices): (1) Contract date: May 18, 2026 (2) Name of the collecting institution: Taishin International Bank, Dunnan Branch (3) Depository bank for the dedicated account: First Commercial Bank, Wan-Nei Branch