【Changkuang】Announcement by Changkuang Precision Machinery (Guangzhou) Co., Ltd. on Acquiring Real Estate Use Rights from a Related Party

1. Name and nature of the subject matter (e.g., land parcel XX, section XX, segment XX in Taichung City, North District): Part of Changxing (Guangzhou) Optoelectronics Material Co., Ltd.'s factory, Room 201, No. 8 Ruihe Road, Huangpu District, Guangzhou City 2. Date of occurrence of the event: 2026/5/6~2026/5/6 3. Date of board of directors' approval: May 6, 2026 (Minguo 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: (1) Lease area: 1,048 square meters (2) Price per unit: RMB 60 per square meter (including tax) (3) Total rent: RMB 62,880 per month (including tax) (4) Right-of-use asset amount: Estimated RMB 3,171 thousand (approximately NTD 14,736 thousand) 6. Counterparty of the transaction and its relationship with the company (if the counterparty is a natural person and not a related party of the company, their name may be omitted): (1) Counterparty: Changxing (Guangzhou) Optoelectronics Material Co., Ltd. (2) Relationship with the company: Both are subsidiaries of Changxing Materials Industrial Co., Ltd. 7. If the counterparty is a related party, the reason for selecting the 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 also be announced: (1) Reason for selecting the related party as the transaction object: Group resource integration planning and utilization (2) Previous transferor: Not applicable 8. If the owner of the transaction object has been a related party of the company within the past five years, the date and price of acquisition and disposal by the related party, and the relationship with the company at the time of the transaction shall also be announced: Not applicable 9. Estimated disposal gain (or loss) (not applicable for asset acquisition) (for deferred items, a table explaining the recognition status should be provided): Not applicable 10. Delivery or payment terms (including payment period and amount), contract restriction clauses, and other important agreements: (1) Payment terms: Payment according to the lease agreement (2) Lease period: From June 1, 2026, to May 31, 2031 (3) Other important agreements: None 11. Method of determining this transaction (e.g., tender, price comparison, or negotiation), reference basis for price determination, and decision-making unit: (1) Method of determining the transaction: Mutual negotiation (2) Reference basis for price determination: Reference to local market conditions (3) Decision-making unit: Board of Directors of Changkuang Precision Machinery (Guangzhou) Co., Ltd. 12. Name of professional appraiser's firm or company and its appraisal 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 significant difference in the appraisal results, the reason for the difference and the CPA's opinion: Not applicable 19. Name of accounting firm: Not applicable 20. Name of CPA: Not applicable 21. CPA's license number: Not applicable 22. Broker and brokerage fees: Not applicable 23. Specific purpose or use of acquisition or disposal: For production and operation use 24. Opinions of directors who expressed dissenting opinions on this transaction: Not applicable 25. Is this transaction a related party transaction: Yes 26. Date of approval by supervisors or audit committee: May 6, 2026 (Minguo Calendar Year 115) 27. Is this transaction for acquiring 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 item 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 announcement for the same event: Not applicable 31. Other matters to be specified: CNY/TWD exchange rate = 4.647