【Chang Guang】Announcement by Subsidiary Chang Guang Precision Machinery (Guangzhou) Co., Ltd. on the Disposal of Related Party Real Estate Right-of-Use Assets (Early Termination of Lease Agreement)

1. Name and nature of the subject matter (e.g., land in XX section, XX subsection, Beitun District, Taichung City): Part of Changxing (Guangzhou) Optoelectronic Materials Co., Ltd.'s factory building, Room 201, No. 8 Ruihe Road, Huangpu District, Guangzhou City, and No. 69 Dongpeng Avenue. 2. Date of occurrence: 2026/5/6~2026/5/6 3. Date of approval by the Board of Directors: 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: (1) Lease area of 1,085 square meters, monthly rent of RMB 65,100 (tax included). Original lease term was from 2023/7/1 to 2028/6/30. (2) Early termination of the lease agreement from 2026/5/31, resulting in a net decrease of RMB 1,300 thousand in right-of-use assets (approximately NTD 6,040 thousand). 6. Counterparty 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) Optoelectronic Materials Co., Ltd. (2) Relationship with the company: Both are subsidiaries of Changxing Materials Industry Co., Ltd. 7. If the counterparty is a related party, the reason for selecting the related party as the transaction object, the previous owner, the relationship between the previous owner and the company and the counterparty, the date of previous transfer, and the transfer amount should also be announced: (1) Reason for selecting the related party as the transaction object: The original lessor of the lease agreement. (2) Previous owner: Not applicable 8. If the owner of the transaction subject has been a related party of the company within the past five years, the date of acquisition and disposal, price, and relationship with the company at the time of the transaction should also be announced: Not applicable 9. Expected disposal gain (or loss) (not applicable for asset acquisition) (deferred items should be listed and explained for recognition): Expected disposal gain is RMB 133 thousand (approximately NTD 616 thousand). 10. Delivery or payment terms (including payment period and amount), contract restrictions, and other important agreements: Not applicable 11. Method of decision for this transaction (e.g., bidding, price comparison, or negotiation), reference basis for price determination, and decision-making unit: (1) Method of decision for the transaction: Mutually agreed upon by both parties. (2) Reference basis for price determination: Not applicable (3) Decision-making unit: Board of Directors of Chang Guang 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 for 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 why the appraisal report has not yet been obtained: Not applicable 18. If there is a significant difference in the appraisal results, the reason for the difference and the opinion of the accountant: 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: Early termination of the lease agreement due to adjustments in operational planning. 24. Opinions of dissenting directors on this transaction: Not applicable 25. Is this 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: No 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 that should be specified: CNY/TWD exchange rate = 4.647 Keywords: Material Information