Gold Circuit's Subsidiary Suzhou Gold Circuit Announces Entrusted Construction of Factory on Own Land

1. Type of Contract: Entrusted Construction on Own Land 2. Date of Fact: June 16, 2026 (Minguo Year 115) 3. Board Approval Date: June 16, 2026 (Minguo Year 115) 4. Other Approval Dates: Not applicable 5. Counterparty and Relationship with the Company: Counterparty: Tongzhou Construction Group Co., Ltd. Relationship: Unrelated party 6. Main Contract Contents (including total contract amount, expected investment amount, contract start and end dates, restrictive clauses, and other important terms): Total Contract Amount: RMB 187,480,000 inclusive of tax (approximately NT$877,406,400, converted at an exchange rate of 4.68) 7. Name of Professional Appraisal Firm or Company and Appraisal Result: Not applicable 8. Name of Real Estate Appraiser: Not applicable 9. License Number of Real Estate Appraiser: Not applicable 10. Specific Purpose of Acquisition: For production and operational needs 11. Dissenting Director's Opinion on the Transaction: None 12. Whether the Transaction is a Related-Party Transaction: No 13. Date of Supervisor Approval or Audit Committee Consent: Not applicable 14. Whether the Appraisal Report is at a Restricted, Specific, or Special Price: No or Not applicable 15. Whether an Appraisal Report Has Not Yet Been Obtained: No or Not applicable 16. Reason for Not Yet Obtaining the Appraisal Report: Not applicable 17. Reasons for Significant Differences in Appraisal Results and Auditor's Opinion: Not applicable 18. Name of Accounting Firm: Not applicable 19. Name of Auditor: Not applicable 20. Auditor's License Number: Not applicable 21. Previous Date of Material Information Disclosure on the Same Event: Not applicable 22. Other Disclosures: None