Powertech Subsidiary Jing-Chao-Cheng Announces Procurement of Facility and Cleanroom Engineering Projects

1. Name and nature of the subject matter (e.g., land located at Section XX, Subsection XX, North District, Taichung City): Facility engineering and cleanroom engineering.

2. Date of occurrence: 8/18/115 ~ 8/18/115

3. Board approval date: Not applicable

4. Other approval dates: Approval level: Chairman August 18, 2026 (Minguo 115)

5. Quantity of units (e.g., XX square meters, equivalent to XX ping), unit price, and total transaction amount: One batch; total transaction amount: NT$1,190,000,000.

6. Counterparty and its relationship with the company (if the counterparty is an individual and not a related party of the company, name disclosure may be omitted): Giant Han System Technology Co., Ltd.; relationship with the company: None.

7. If the counterparty is a related party, state the reason for selection, previous transferor, relationships among previous transferor, company, and counterparty, transfer date, and transfer amount: Not applicable.

8. If the owner of the subject matter was a related party of the company within the past five years, disclose the date of acquisition and disposal, price, and relationship with the company at the time: Not applicable.

9. Estimated gain (or loss) on disposal (not applicable for asset acquisition) (if deferred, list recognition details): Not applicable.

10. Delivery or payment terms (including payment period and amount), contractual restrictions, and other important agreements: Payment terms shall be made according to the procurement contract (purchase order).

11. Decision method for this transaction (e.g., bidding, comparison, negotiation), reference basis for price determination, and decision-making unit: Procurement conducted via comparison and negotiation in accordance with company procurement procedures, approved by authorized management.

12. Name of professional appraiser firm or company and appraisal amount: Not applicable.

13. Name of professional appraiser: Not applicable.

14. License number of professional appraiser: Not applicable.

15. Whether the appraisal report is for a limited price, specific price, or special price: No or not applicable

16. Whether an appraisal report has not yet been obtained: Yes

17. Reason for not obtaining the appraisal report: Not applicable.

18. Reasons for significant discrepancies in appraisal results and auditor's opinion: Not applicable.

19. Auditor firm name: Not applicable.

20. Auditor name: Not applicable.

21. Auditor license number: Not applicable.

22. Broker and brokerage fees: Not applicable.

23. Specific purpose or use of acquisition or disposal: For operational production use.

24. Dissenting opinions from directors regarding this transaction: Not applicable.

25. Whether this transaction is a related-party transaction: No

26. Date of supervisor approval or audit committee consent: Not applicable

27. Whether this transaction involves acquiring real estate or right-of-use assets from a related party: No

28. Valuation price under Article 16 of the 'Regulations Governing the Acquisition or Disposition of Assets by Publicly Issued Companies': Not applicable

29. Valuation price under Article 17 of the same regulations if the valuation under the previous item is lower than the transaction price: Not applicable

30. Previous date of material information disclosure for the same event: Not applicable

31. Other explanatory matters: None.