[Quanta] The Company is invited to participate in an investment forum

Compliance with Article 4, Paragraph XX: 12. Date of occurrence: 115/06/01. 1. Date of investor conference: 115/06/01. 2. Time of investor conference: 09:00 AM. 3. Location of investor conference: Grand Hyatt Taipei. 4. Summary of the investor conference: The company has been invited to participate in the "HSBC Taiwan Conference 2026" hosted by HSBC to provide a review and outlook on the company's current operations. 5. Other matters: For detailed information, please refer to the Market Observation Post System and the company's website. For complete financial and business information, please check the investor conference list or the investor conference section on the Market Observation Post System.