Joulwang Electronics Announces Acquisition of Semiconductor Manufacturing Equipment

1. Name and nature of the subject matter (e.g., land located in Section XX, Subsection XX, North District, Taichung City): Semiconductor product manufacturing facilities and equipment

2. Date of occurrence: 7/30/2025 ~ 6/18/2026

3. Board approval date: Not applicable

4. Other approval dates: Approval level: General Manager June 18, 2026 (ROC Year 115)

5. Quantity of transaction units (e.g., XX square meters, equivalent to XX ping), unit price, and total transaction amount: Quantity: One batch Unit price: As mutually agreed Total transaction amount: NT$1,164,848 thousand as agreed by both parties

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): Counterparty: TOKYO ELECTRON LIMITED Relationship with the company: None

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

8. If the ownership of the subject matter was held by a related party of the company within the past five years, state the date of acquisition and disposal by the related party, 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 and explain recognition status): Not applicable

10. Delivery or payment terms (including payment period and amount), contractual restrictions, and other important agreements: (1) Delivery or payment terms: As mutually agreed (2) Contractual restrictions and other important agreements: None

11. Decision method of this transaction (e.g., bidding, price comparison, or price negotiation), reference basis for price determination, and decision-making unit: Decision method: Price comparison and negotiation Reference basis for price determination: Based on quotations from the original manufacturer and other vendors, compared and negotiated, then decided by the procurement department and user department with approval authority Decision-making unit: General Manager

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 limited price, specific price, or special price: No or not applicable

16. Whether the appraisal report has not yet been obtained: No or not applicable

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

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

19. Name of auditor firm: Not applicable

20. Name of auditor: Not applicable

21. License number of auditor: Not applicable

22. Broker and brokerage fees: None

23. Specific purpose or use of acquisition or disposal: For use in wafer product manufacturing

24. Opinion of directors who objected to this transaction: Not applicable

25. This transaction is a related-party transaction: No

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

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

28. Valuation price under Article 16 of the 'Asset Acquisition and Disposal Rules for Publicly Issued Companies': Not applicable

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

30. Previous date of material information disclosure regarding the same event: June 18, 2026 (ROC Year 115)

31. Other explanatory matters: None.