[Yingwei] Announcement of Company's Acquisition of Machinery and Equipment

1. Name and Nature of Target Item (e.g., Land parcel XX, XX District, Taichung City): Machinery and Equipment
2. Date of Fact Occurrence: 114/12/24~115/4/30
3. Date of Board of Directors Approval: February 25, 2026
4. Date of Other Approval: Not applicable
5. Quantity of Transaction Units (e.g., XX sq m, equivalent to XX ping), Unit Price, and Total Transaction Amount: Several batches; Total Transaction Amount: Approximately NT$871,812,300.
6. Transaction Counterparty and Relationship with the Company (If the counterparty is an individual and not related to the company, their name may be omitted): Tong Ching Trading Co., Ltd.; Relationship with Company: None.
7. If the counterparty is a related party, disclose the reason for selecting the related party as the counterparty, previous owner, relationship between previous owner, company, and counterparty, date of previous transfer, and transfer amount: Not applicable.
8. If the owner of the transaction target in the past five years was a related party of the company, also disclose the date of acquisition and disposal by the related party, price, and the relationship between the related party and the company at the time of the transaction: Not applicable.
9. Estimated Profit (or Loss) from Disposal (Not applicable for asset acquisition) (Deferred items should be listed with recognition status): Not applicable.
10. Delivery or Payment Terms (including payment period and amount), Contractual Restrictions, and Other Important Agreements: Delivery and payment according to contract and purchase order terms.
11. Method of Decision for this Transaction (e.g., tender, bid, or negotiation), Reference Basis for Price Determination, and Decision-Making Unit: Transaction Decision Method: Competitive bidding and negotiation. Reference Basis for Price Determination: Based on market conditions. Decision-Making Unit: Approved by the Board of Directors, with full authority delegated to the Chairman.
12. Professional Appraisal Firm or Company Name and Appraised Amount: Not applicable.
13. Name of Professional Appraiser: Not applicable.
14. License Number of Professional Appraiser: Not applicable.
15. Is the appraisal report a limited price, specific price, or special price? No or Not applicable.
16. Is the appraisal report not yet obtained? No or Not applicable.
17. Reason for not yet obtaining the appraisal report: Not applicable.
18. If appraisal results show significant differences, state the reasons for the differences and the accountant's opinion: Not applicable.
19. Name of Accounting Firm: Not applicable.
20. Name of Accountant: Not applicable.
21. License Number of Accountant: Not applicable.
22. Broker and Brokerage Fee: Not applicable.
23. Specific Purpose or Use of Acquisition or Disposal: For production use.
24. Opinion of dissenting directors regarding this transaction: Not applicable.
25. Is this transaction a related party transaction? No.
26. Date of approval by supervisors or audit committee: February 25, 2026.
27. Did this transaction involve the acquisition of real estate or the right to use assets from a related party? No.
28. Price evaluated according to Article 16 of the 'Regulations Governing the Acquisition or Disposal of Assets by Publicly Issued Companies': Not applicable.
29. If the evaluated price according to the preceding paragraph is lower than the transaction price, evaluate according to Article 17 of the same Regulations: Not applicable.
30. Date of previous material information announcement for the same event: Not applicable.
31. Other matters to be noted: None.
Keywords: Material Information