Hung-Chin Board Approves Self-Funded Construction Project for Long-Shan Plant

1. Type of Contract: Self-Funded Construction
2. Event Date: June 15, 2026 ~ June 15, 2026
3. Board Approval Date: June 15, 2026 (Minguo Year 115)
4. Other Approval Dates: Not applicable
5. Counterparty and Relationship with the Company:
To be announced upon confirmation.
6. Main Contract Contents (including total contract amount, estimated investment amount, contract start and end dates, restrictive clauses, and other important terms):
Estimated total construction budget is NT$1.4 billion.
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 company operational needs
11. Dissenting Director Opinions on the Transaction:
None
12. Whether the Transaction is a Related-Party Transaction: No
13. Date of Supervisor Approval or Audit Committee Consent:
June 15, 2026 (Minguo Year 115)
14. Whether the Appraisal Report is at a 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 Yet 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 Explanatory Matters:
None