Jiahe Announces Signing of Fire Safety Equipment Construction Management Contract with Subsidiary via Self-owned Land Commissioned Construction

1. Type of Contract: Fire Safety Engineering Management Contract 2. Date of Event: June 18, 2026 (Minguo Year 115) 3. Board Approval Date: June 18, 2026 (Minguo Year 115) 4. Other Approval Dates: Not applicable 5. Counterparty and Relationship to Company: (1) Counterparty: Menghui Construction Co., Ltd. (2) Relationship to Company: Subsidiary of the Company 6. Main Contract Contents (including total contract amount, estimated investment, contract period, restrictions, and other important terms): (1) Contract Name: Tripartite Fire Safety Equipment Construction and Management Agreement (2) Total Contract Amount: NT$885,000 (tax included) (3) Construction Site: No. 533, Fuxing Road, Samshe Village, Hsinchu City, Tainan City (4) Contract Duration: From the date of signing until the contractor fulfills all obligations (5) Restrictive Clauses and Other Important Provisions: As stipulated in the contract 7. Name of Professional Appraisal Firm or Company and Appraisal Results: Not applicable 8. Name of Real Estate Appraiser: Not applicable 9. License Number of Real Estate Appraiser: Not applicable 10. Specific Purpose of Acquisition: To assist the parent company in supervising third-party construction progress and quality acceptance management 11. Dissenting Director Opinions on the Transaction: None 12. Related-Party Transaction: Yes 13. Date of Supervisor Approval or Audit Committee Consent: June 18, 2026 (Minguo Year 115) 14. Whether Appraisal Report Indicates Limited, Specific, or Special Price: No or Not applicable 15. Whether Appraisal Report Has Not Yet Been Obtained: No or Not applicable 16. Reason for Not Obtaining 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