8499 Dingxuan-KY: Subsidiary Acquires RMB 30 Million Structured Deposit Product

Announcement Date: 2026-06-24 Filing Date: 2026-06-23 Filing Time: 16:14:56 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: Item 20 Factual Date: 2026-06-23

1. Name and nature of the subject matter (if preferred shares, specify dividend rate and other terms): CITIC Wealth-Huixin FX-Linked RMB Structured Deposit, Product A39524, C26A39524

2. Factual Date: 2026/06/23 ~ 2026/06/23

3. Board Approval Date: Not applicable

4. Other Approval Dates: Approval Level: Executed in accordance with company's internal authorization Approved on: June 23, 2026

5. Transaction quantity, unit price, and total amount: A39524 C26A39524 30-day term: RMB 30 million

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

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

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

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

10. Gain (or loss) from disposal (not applicable for acquisition of securities; deferred gains to be explained): Not applicable

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

12. Decision-making method, pricing reference basis, and decision-making unit: Executed in accordance with company's internal authorization

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

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

15. Cumulative securities investments under Article 3 of the 'Regulations on Acquisition or Disposal of Assets by Publicly Issued Companies' (including this transaction), as a percentage of total assets and equity attributable to parent in the latest financial statements, and operating capital amount: (1) Percentage of total assets: 23.78% (2) Percentage of equity attributable to parent: 46.369% (3) Operating 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 director 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-rational opinion? Not applicable

22. Name of accounting firm: Not applicable

23. Name of accountant: Not applicable

24. Accountant 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: Internal funds

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

30. Other explanatory matters: None