[Voltronic] Invited to participate in the '2026 Yuanta Securities Q2 Investment Forum'

In accordance with Article 4, Paragraph XX: 12 Date of occurrence: 2026/06/09 1. Date of investor conference: 2026/06/09 2. Time of investor conference: 09:30 AM 3. Location of investor conference: Regent Taipei (4F, No. 3, Ln. 39, Sec. 2, Zhongshan N. Rd., Zhongshan Dist., Taipei City) 4. Highlights of the investor conference: Our company has been invited to participate in the '2026 Yuanta Securities Q2 Investment Forum' to introduce the company's operational and financial status. 5. Other matters: None Please check the Market Observation Post System for complete financial and business information under the investor conference section.