[Zhen Ding-KY] Participation in Morgan Stanley's Asia AI Summit

In accordance with Article 4, Paragraph XX of the regulations: 12. Date of occurrence: 115/05/28. 1. Date of investor conference: 115/05/28. 2. Time of conference: 09:30 AM. 3. Location: Mandarin Oriental, Taipei (Address: No. 158, Dunhua North Road, Songshan District, Taipei City). 4. Summary of the conference: The company was invited to participate in the Asia AI Summit hosted by Morgan Stanley to explain the outlook for the PCB industry and information related to the company's operational performance. 5. Other matters: None. For complete financial and business information, please refer to the investor conference list or the investor conference section on the Market Observation Post System.