[CHEM] Participating in the institutional investor conference invited by Fubon Securities

In accordance with Article 4, Paragraph XX: 12 Date of occurrence of the event: 2026/04/23 1. Date of the institutional investor conference: 2026/04/23 2. Time of the institutional investor conference: 14:00 3. Location of the institutional investor conference: Fubon Financial Center: 15F, No. 169, Sec. 4, Ren'ai Rd., Da'an Dist., Taipei City 4. Brief information of the institutional investor conference: To explain the company's operational results and future outlook to institutional investors. 5. Other matters to be specified: None For complete financial and business information, please refer to the Institutional Investor Conference List or the Institutional Investor Conference section on the Market Observation Post System (MOPS).