[Primax] The Company was invited to participate in the '2026 Taiwan Tech Conference' hosted by Citi Securities

Compliance Clause 4, Section XX: 12. Date of occurrence: 115/06/04. 1. Date of investor conference: 115/06/04. 2. Time of investor conference: 09:00 AM. 3. Location of investor conference: W Hotel. 4. Summary of the conference: The company was invited to participate in the '2026 Taiwan Tech Conference' hosted by Citi Securities to explain operational results and future prospects. 5. Other matters: None. For complete financial and business information, please refer to the investor conference list or section on the Market Observation Post System.