2426 Ding Yuan: Subsidiary Acquires RMB 83 Million in Principal-Guaranteed Structured Deposits

Announcement Date: July 24, 115 Statement Date: July 23, 115 Statement Time: 15:34:38 Company Code: 2426 Company Name: Ding Yuan Subject: Announcement by subsidiary Yuan Mao Optoelectronics Technology (Wuhan) Co., Ltd. regarding cumulative acquisition of principal-guaranteed RMB-denominated structured deposit products reaching disclosure threshold Applicable Clause: Clause 20 Factual Date: July 23, 115

Details: 1. Name and nature of the subject matter (if preferred shares, specify issuance terms such as dividend rate): RMB-denominated structured deposit products

2. Factual Date: April 23, 115 – July 23, 115

3. Board Approval Date: Not applicable

4. Other Approval Dates: Approval Level: Chairman Approval, July 23, 115

5. Transaction Quantity, Unit Price, and Total Amount: RMB 83,000,000

6. Counterparty and Relationship to Company (if individual and not a related party, name may be omitted): Industrial Bank / Non-related party

7. If counterparty is a related party, disclose reason for selection, prior transferee, relationships among prior transferee, company, and counterparty, transfer date, and amount: Not applicable

8. If the subject has been owned by a related party within the past five years, disclose the related party’s acquisition and disposal date, price, and relationship to the company at the time: Not applicable

9. Matters related to disposal of receivables (including types of collateral attached to disposed receivables; if receivables from related parties, disclose names and book value): Not applicable

10. Gain (or loss) from disposal (not applicable for acquisition of securities) (if previously deferred, list recognition status): Not applicable

11. Delivery or payment terms (including payment period and amount), contractual restrictions, and other important agreements: Paid in full

12. Decision-making method for this transaction, reference basis for price determination, and decision-making unit: Based on company’s approval authority

13. Net asset value per share of the securities-issuing company: Not applicable

14. Cumulative holdings (including this transaction) of the securities to date, including quantity, amount, ownership percentage, and rights restrictions (e.g., pledge status): RMB 41,000,000; Rights restrictions: None

15. Cumulative investment in securities under Article 3 of the 'Regulations on Acquisition or Disposition of Assets by Publicly Issued Companies' (including this transaction), as a percentage of total assets and equity attributable to parent company owners in the company’s latest financial statements, and the amount of working capital in the latest financial statements: Percentage of total assets in parent company’s latest standalone financial statements: 8.30%; Percentage of equity attributable to parent company owners in latest consolidated financial statements: 10.32%; Working capital in parent company’s latest standalone financial statements: NT$1,410,180 thousand

16. Broker and brokerage fees: Not applicable

17. Specific purpose or use of acquisition or disposal: Maturity redemption of principal-guaranteed floating-return structured deposits

18. Dissenting directors’ opinions on this transaction: Not applicable

19. Is this a related-party transaction? No

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

21. Did the accountant issue a non-reasonableness opinion on this transaction? Not applicable

22. Name of accounting firm: Not applicable

23. Name of accountant: Not applicable

24. Accountant’s license number: Not applicable

25. Does this involve a change in business model? No

26. Explanation of business model change: Not applicable

27. Transaction history with counterparty in the past year and expected in the next year: Not applicable

28. Source of funds: Self-funded

29. Previous date of material information disclosure on the same event: Not applicable

30. Other explanatory matters: None