CSMSC Subsidiary Chung Hsing Machinery Announces Acquisition of Land Use Rights Asset

1. Name and nature of the subject property (e.g., land located at Section XX, Minor Section XX, Beitun District, Taichung City): Land in Xiaogang District, Kaohsiung City, Daren Palace Minor Section 1

2. Date on which the event occurred: 115/9/23 ~ 115/9/23

3. Board approval date: September 23, 2026 (ROC Year 115)

4. Other approval dates: Not applicable

5. Quantity of units (e.g., XX square meters, equivalent to XX ping), unit price, and total transaction amount: Quantity: 194,330 square meters Unit price: Annual rent of NT$135,545,175 (exclusive of business tax) Total transaction amount: Right-of-use asset valued at NT$1,738,882,287

6. Counterparty and its relationship with the company (if the counterparty is an individual and not a related party of the company, name disclosure may be omitted): China Steel Corporation (hereinafter referred to as “CSC”); parent company of Chung Hsing Machinery

7. If the counterparty is a related party, state the reason for selecting such party, previous transferor, relationship among previous transferor, company, and counterparty, transfer date, and transfer amount: Meets company's operational requirements

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

9. Expected gain (or loss) on disposal (not applicable for asset acquisition) (if deferred, provide a table showing recognition schedule): Not applicable

10. Delivery or payment terms (including payment periods and amounts), contractual restrictions, and other important agreements: Payment terms: Delivered according to contract stipulations Lease period: From December 1, 2026 (ROC Year 115) to November 30, 2031 (ROC Year 120) Contractual restrictions and other important agreements: None

11. Decision method for this transaction (e.g., bidding, comparison, negotiation), reference basis for pricing, and decision-making body: Board resolution

12. Name of professional appraiser firm or company and appraisal value: Chung-Hua Real Estate Appraisers Office; NT$153,437,268 per year (tax-exclusive)

13. Name of professional appraiser: Hsieh Tien-Chin

14. License number of professional appraiser: (99) Taipei City Appraisal No. 000149

15. Whether the appraisal report indicates a restricted price, specific price, or special price: No or not applicable

16. Whether the appraisal report has not yet been obtained: No or not applicable

17. Reason for not obtaining the appraisal report: Not applicable

18. Reasons for significant discrepancies in appraisal results and auditor's opinion: Not applicable

19. Name of auditing firm: Not applicable

20. Name of auditor: Not applicable

21. Auditor license number: Not applicable

22. Broker and brokerage fees: None

23. Specific purpose or use for acquisition or disposal: The property will be used to construct equipment for casting, cold welding, processing, and assembly production lines. Its location near the parent company and port facilitates supply chain integration, enables the company to undertake integrated engineering projects, and supports the development of heavy machinery import-export trade.

24. Dissenting director's opinion regarding this transaction: None

25. Whether this transaction is a related-party transaction: Yes

26. Date of supervisor approval or audit committee consent: September 23, 2026 (ROC Year 115)

27. Whether this transaction involves acquiring real estate or right-of-use assets from a related party: Yes

28. Valuation based on Article 16 of the 'Asset Acquisition and Disposal Rules for Publicly Issued Companies': Not applicable

29. Valuation under Article 17 of the same rules if the valuation under the preceding item is lower than the transaction price: Not applicable

30. Previous date of major information announcement regarding the same event: Not applicable

31. Other explanatory matters: None