Delta Electronics: Announcement on Board Resolution Regarding Construction of Guanyin Plant

1. Type of contract: Engineering contract 2. Date of occurrence of the event: 2026/4/29~2026/4/29 3. Date of board approval: April 29, 2026 4. Other approval dates: Not applicable 5. Counterparty to the contract and its relationship with the company: The counterparty will be announced separately after confirmation. 6. Main content of the contract (including total contract amount, estimated amount of investment, and contract start and end dates), restrictive clauses, and other important agreements: The company's board of directors resolved on April 29, 2026, to construct the Guanyin plant. The total estimated engineering cost is approximately NT$10.3 billion. Other related matters will be announced separately after confirmation. 7. Name of professional appraisal firm or company and its appraisal results: As it is a self-owned land and commissioned construction, it is not applicable. 8. Name of real estate appraiser: Not applicable 9. Real estate appraiser's license number: Not applicable 10. Specific purpose of acquisition: To meet future business development needs 11. Opinions of directors who dissented from this transaction: None 12. This transaction is a related party transaction: No 13. Date of approval by supervisors or audit committee: April 29, 2026 14. Is the appraisal report for a limited price, specific price, or special price: No or not applicable 15. Has the appraisal report not yet been obtained: No or not applicable 16. Reason for not yet obtaining the appraisal report: Not applicable 17. If there is a significant difference in the appraisal results, the reason for the difference and the accountant's opinion: Not applicable 18. Name of accounting firm: Not applicable 19. Name of accountant: Not applicable 20. Accountant's license number: Not applicable 21. Date of previous major announcement regarding the same event: Not applicable 22. Other matters to be specified: None Keywords: Material Information