MAT: Announcement of the company's disposal of operating machinery and equipment to its subsidiary Nanjing MAT Electronic Technology Co., Ltd.

1. Name and nature of the asset (e.g., land located in XX section, XX subsection, Beitun District, Taichung City): Operating machinery and equipment 2. Date of occurrence: 2026/5/6~2026/5/6 3. Date of Board of Directors' approval: May 6, 2026 (Republic of China calendar year 115) 4. Other approval dates: Not applicable 5. Quantity of transaction units (e.g., XX square meters, equivalent to XX ping), price per unit, and total transaction amount: 3 units; average price per unit: NT$38,005,700, total transaction amount: NT$114,017,100 6. Counterparty and its relationship with the company (if the counterparty is a natural person and not a related party of the company, disclosure of name may be omitted): Nanjing MAT Electronic Technology Co., Ltd., a subsidiary of the company 7. If the counterparty is a related party, the reason for selecting a related party as the transaction object, the previous transferor, the relationship between the previous transferor and the company and the counterparty, the previous transfer date, and the transfer amount shall be announced: For operational needs 8. If the transaction object's owner was a related party of the company within the last five years, the related party's acquisition and disposal dates, prices, and relationship with the company at the time of transaction shall also be announced: Not applicable 9. Estimated disposal gain (or loss) (not applicable to asset acquirers) (for deferred items, a list explaining recognition status should be provided): This transaction is between a parent company and its subsidiary; there will be no disposal gain or loss after consolidation. 10. Delivery or payment terms (including payment period and amount), contract restriction clauses, and other important agreements: Payment according to order terms. 11. Method of determining this transaction (e.g., tender, price comparison, or negotiation), reference basis for price determination, and decision-making unit: The transaction price shall be the amount agreed upon by both parties at the time of equipment sale; handled in accordance with the company's approval authority. 12. Name of professional appraiser's firm or company and its appraised amount: Not applicable 13. Name of professional appraiser: Not applicable 14. Professional appraiser's license number: Not applicable 15. Is the appraisal report a limited price, specific price, or special price: No or not applicable 16. Has the appraisal report not yet been obtained: No or not applicable 17. Reason for not yet obtaining the appraisal report: Not applicable 18. If there is a material difference in the appraisal result, the reason for the difference and the accountant's opinion: Not applicable 19. Name of accounting firm: Not applicable 20. Name of accountant: Not applicable 21. Accountant's license number: Not applicable 22. Broker and brokerage fees: Not applicable 23. Specific purpose or use of acquisition or disposal: Operational use 24. Opinions of directors who expressed dissent to this transaction: Not applicable 25. Is this transaction a related party transaction: Yes 26. Date of approval by supervisor or audit committee: May 6, 2026 (Republic of China calendar year 115) 27. Is this transaction for the acquisition of real estate or its right-of-use assets from a related party: Yes 28. Price evaluated according to Article 16 of the "Regulations Governing the Acquisition and Disposal of Assets by Public Companies": Not applicable 29. If the price evaluated in the preceding paragraph is lower than the transaction price, the price evaluated according to Article 17 of the same regulations: Not applicable 30. Date of previous material information disclosure for the same event: Not applicable 31. Other matters to be specified: The total transaction amount is US$3,615,000, calculated using the average spot exchange rate of USD$1=NTD$31.54 from the Bank of Taiwan.