THSRC procurement plans for turnkey project of Yanchao main workshop space reconfiguration, new factory and parking lot establishment. (Total amount adjustment)

1.Name and nature of the underlying asset (e.g., land located at Sublot XX, Lot XX, North District, Taichung City): Turnkey project to
    Yanchao main workshop space reconfiguration, new establish of an integrated factory building and multistorey parking.
2.Date of occurrence of the event: 2025/12/10
3.Date of the board of directors resolution: 2025/12/10
4.Other approval date: Not applicable.
5.Transaction unit amount (e.g.XX square meters, equivalent to XX ping), unit price, and total transaction price:
   (1) Transaction volume: Not applicable.
   (2) Unit price: Not applicable.
   (3) Total Transaction price: NTD6,729,999,999(VAT inclusive) 
6.Trading counterparty and its relationship with the Company (if the trading counterparty is a natural person and furthermore
   is not a related party of the Company, the name of the trading counterparty is not required to be disclosed): United Steel
   Engineering & Construction  Corporation., which is a related party of THSRC.
7.Where the trading counterparty is a related party, announcement shall also be made of the reason for choosing the related
    party as trading  counterparty and the identity of the previous owner, its relationship with the Company and the trading
    counterparty, and the previous date and monetary amount of transfer:
    (1) Reason for choosing the related party as trading counterpart: Trading counterpart was selected through an open bidding
          process where the most favorable bid was chosen. The Procurement Committee scored the basic qualifications, service
          proposals, and pricing rationale of the corporate bidders, with the highest-ranking bidder selected as trading counterpart.
    (2) Identity of the previous owner: Not applicable.
8.Where an owner of the underlying assets within the past five years has been a related party of the Company, the announcement
    shall also include  the date and price of acquisition and disposal by the related party, and its relationship with the Company at
    the time of the transaction: Not applicable.
9.Projected gain (or loss) through disposal (not applicable for acquisition of assets; those with deferral should provide a table
    explaining  recognition): Not applicable
10.Terms of delivery or payment (including payment period and monetary amount), restrictive covenants in the contract, and
      other important terms and conditions:Terms of delivery and payment: to be carried out in accordance with the relevant
      contract; restrictive covenants in the said contracts: none.
11.The manner of deciding on this transaction (such as invitation to tender, price comparison, or price negotiation), the reference
      basis for the decision on price, and the decision-making unit:
     (1) The manner of deciding on this transaction and the reference basis for the decision on price: Conducted in accordance with
           THSRC bidding documents and price negotiation.
     (2) Decision-making department: Board of Directors.
12.Name of the professional appraisal firm or company and its appraisal price: Not applicable.
13.Name of the professional appraiser: Not applicable.
14.Practice certificate number of the professional appraiser: Not applicable.
15.The appraisal report has a limited price, specific price, or special price: Not applicable.
16.An appraisal report has not yet been obtained: Not applicable.
17.Reason for an appraisal report not being obtained: Not applicable.
18.Reason for any significant discrepancy with the appraisal reports and opinion of the CPA: Not applicable.
19.Name of the CPA firm: Not applicable.
20.Name of the CPA: Not applicable.
21.Practice certificate number of the CPA: Not applicable.
22.Broker and broker's fee: Not applicable.
23.Concrete purpose or use of the acquisition or disposal: In line with the introduction of New Generation Rolling Stock (NGRS),
      the requirements for inspection equipment and processes necessary for maintenance operations, integrating the overall
      maintenance capacity of existing 700T trains, and considering improvements in operational efficiency and safety, as well as
      the need for adjustments in related inspection equipment and space planning.
24.Any dissenting opinions of directors to the present transaction: None.
25.Whether the counterparty of the current transaction is a related party: Yes.
26.Date of ratification by supervisors or approval by the audit committee: 2025/12/09
27.The transaction is to acquire a real property or right-of-use asset from a related party: No.
28.The price assessed in accordance with the Article 16 of the Regulations Governing the Acquisition and Disposal of Assets
      by Public Companies: Not applicable.
29.Where the above assessed price is lower than the transaction price, the price assessed in accordance with the Article 17
      of the same regulations: Not applicable.
30.Date on which material information regarding the same event has been previously released: 2025/12/10
31.Any other matters that need to be specified: Approved by the 10th Board of Directors at the 34th Board Meeting held
      on Dec. 10, 2025.