OCS Maintenance Vehicle Manufacturing and Supply Procurement Announcement（Phase II）

1.Name and nature of the underlying asset (e.g., land located at Sublot XX,Lot XX, North District, Taichung City): OCS Maintenance
    Vehicle Manufacturing and Supply Procurement.(Phase II)
2.Date of occurrence of the event: 2025/09/10
3.Date of the board of directors resolution: 2025/09/10
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) 8 Multi-function vehicles (MV)
(2) 4 Catenary Stretch vehicles (CS) 
(3) Electronic Control Intelligence and Re-Railing Equipment
(4) Unit price: Not applicable
(5) Total transaction price: 1.606 billion NTD (Tax 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): China Steel Corporation
    is a legal entity director 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: Reason for choosing the related party as trading
    counterpart: The method of selecting suppliers is exclusive  invitation to bid. 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 relevant contracts;
      restrictive covenants in said contracts: none; other important stipulations: 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 internal  procedures for price inquiry, comparison, and 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: To enhance reliability and on-site maintenance capabilities of
      maintenance vehicles, thus achieving our goals of autonomous maintenance and localized development and manufacturing
      of rail transportation.
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: 2025/09/08
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: NA
31.Any other matters that need to be specified: Approved by the 10th Board of Directors at the 31st Board Meeting held
     Sept. 10, 2025.