8499 Dingxuan-KY Announces Subsidiary's Disposal of Deposit Financial Products with Approx. NT$765,000 Profit

Announcement Date: July 18, 2026 Statement Date: July 17, 2026 Statement Time: 11:15:52 Company Code: 8499 Company Name: Dingxuan-KY Subject: Announcement on behalf of subsidiary Longyang Electronics (Kunshan) Co., Ltd. regarding disposal of deposit financial products Applicable Clause: Clause 20 Factual Date: July 17, 2026

1. Name and nature of the subject matter (if preferred shares, specify terms such as dividend rate): CGB Wealth Wisdom FX-Linked RMB Structured Deposit A33641 Period C26A33641 CGB Wealth Wisdom FX-Linked RMB Structured Deposit A38232 Period C26A38232

2. Factual date: July 17, 2026 ~ July 17, 2026

3. Board approval date: Not applicable

4. Other approval dates: Approval level: Executed according to company's internal authorization July 17, 2026

5. Transaction quantity, unit price, and total amount: A33641 Period C26A33641 (92 days): RMB 30 million A38232 Period C26A38232 (30 days): RMB 20 million

6. Counterparty and relationship with the company (if individual and not a related party, name may be omitted): China Trust Bank Co., Ltd.; Relationship with company: None

7. If counterparty is a related party, reason for selection and details of previous transferor, relationships, transfer date, and amount: Not applicable

8. If the owner of the subject asset was a related party within the past five years, disclose acquisition/disposal date, price, and relationship at the time: Not applicable

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

10. Gain (or loss) from disposal (not applicable for acquisition of securities) (if previously deferred, explain recognition): Approximately NT$765,000

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

12. Decision method for transaction, basis for price determination, and decision-making unit: Executed according to company's internal authorization

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

14. Cumulative holdings (including this transaction) of the securities: quantity, amount, ownership percentage, and restricted rights (e.g., pledge status): Quantity: Not applicable Amount: RMB 50 million Ownership percentage: Not applicable Restricted rights: None Cumulative holding amount: RMB 50 million

15. Cumulative securities investments under Article 3 of the 'Asset Acquisition and Disposal Standards for Publicly Issued Companies' (including this transaction), as a percentage of total assets and equity attributable to parent company owners in the latest financial statements, and amount of working capital: (1) Percentage of total assets: 22.051% (2) Percentage of equity attributable to parent company owners: 42.997% (3) Working capital amount: NT$6,975,964 thousand

16. Broker and brokerage fees: Not applicable

17. Specific purpose or use of acquisition or disposal: Short-term investment

18. Dissenting opinions from directors: Not applicable

19. Whether this is a related-party transaction: No

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

21. Whether accountants issued a non-reasonableness opinion: Not applicable

22. Name of accounting firm: Not applicable

23. Name of accountant: Not applicable

24. Accountant license number: Not applicable

25. Whether it involves 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: Internal funds

29. Previous material information announcement date for the same event: Not applicable

30. Other explanatory matters: None