8499 Dingxuan-KY Announces Subsidiary's Acquisition of RMB 30 Million Structured Deposit Product

Date of Announcement: July 10, 2026 Date of Statement: July 9, 2026 Time of Statement: 17:00:49 Company Code: 8499 Company Name: Dingxuan-KY Subject: Announcement on behalf of subsidiary Longyang Electric (Kunshan) Co., Ltd. regarding the acquisition of a structured deposit product Applicable Clause: Clause 20 Date of Event: July 9, 2026

Details: 1. Name and nature of the subject matter (if preferred shares, specify issuance conditions such as dividend rate): Gongying Huixin FX-Linked RMB Structured Deposit A41362 Period C26A41362

2. Date of Event: 07/09/2026 ~ 07/09/2026

3. Board Approval Date: Not applicable

4. Other Approval Dates: Approval Level: Executed according to company's authorization authority July 9, 2026

5. Transaction Quantity, Unit Price, and Total Transaction Amount: A41362 Period 31 Days: RMB 30 million

6. Counterparty and Relationship with Company (if individual and not a related party, name may be omitted): Counterparty: CTBC Bank Co., Ltd.; Relationship with Company: None

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

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

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

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

11. Delivery or payment terms (including payment period and amount), contractual restrictions, and other important agreements: One-time payment

12. Decision-making method for this transaction, reference basis for pricing, and decision-making unit: Executed according to company's authorization authority.

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

14. Cumulative holdings (including this transaction) of the securities as of now: quantity, amount, ownership percentage, and rights restrictions (e.g., pledge status): Quantity: Not applicable Amount: RMB 30 million Ownership percentage: Not applicable Rights restrictions: None Cumulative holding amount: RMB 30 million

15. Ratio of cumulative securities investments (including this transaction) under Article 3 of the 'Regulations on Acquisition or Disposition of Assets by Publicly Issued Companies' to total assets and equity attributable to parent company in the latest financial statements, and amount of working capital: (1) Ratio to total assets: 24.103% (2) Ratio to equity attributable to parent company: 46.998% (3) Working capital amount: NT$6,975,964 thousand

16. Broker and brokerage fees: Not applicable

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

18. Dissenting opinions from directors regarding this transaction: Not applicable

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

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

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

22. Name of accounting firm: Not applicable

23. Name of accountant: Not applicable

24. Accountant's license number: Not applicable

25. Whether this 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 date of material information disclosure on the same event: Not applicable

30. Other explanatory matters: None