Hsin Chong Announces Subsidiary Beian Environmental Acquires Right-of-Use Asset

1. Name and nature of the subject asset (e.g., land located at Section XX, Subsection XX, Beitun District, Taichung City): 16th Floor, No. 95, Section 2, Dunhua South Road, Taipei City

2. Date on which the event occurred: 06/18/115 ~ 06/18/115

3. Board approval date: June 18, 2026 (Minguo 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: Total of 176 ping, average monthly price per ping approximately NT$3,040–3,131 (excluding tax) Total contract value: NT$32,632,083 (excluding tax), right-of-use asset value: NT$30,843,493

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): Counterparty: Continental Engineering Co., Ltd. Relationship with the company: Affiliated company

7. If the counterparty is a related party, disclose the reason for selecting the related party as the transaction party, the previous transferor, the relationship among the previous transferor, the company, and the counterparty, the previous transfer date, and transfer amount: 1. Reason for selecting related party: Required for overall operational planning 2. Previous transferor: Not applicable 3. Relationship among previous transferor, company, and counterparty: Not applicable 4. Previous transfer date: Not applicable 5. Previous transfer amount: Not applicable

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

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

10. Delivery or payment terms (including payment schedule and amounts), contractual restrictions, and other important agreements: 1. Delivery or payment terms: Paid monthly according to contract 2. Lease term: 07/01/115 ~ 12/31/120 3. Contractual restrictions: None 4. Other important agreements: None

11. Method of determining the transaction (e.g., bidding, price comparison, negotiation), reference basis for price determination, and decision-making unit: 1. Transaction determination method: Negotiation based on market conditions 2. Reference basis for price determination: Referenced regional office rental prices 3. Decision-making unit: Board resolution

12. Name of professional appraisal firm or company and appraisal amount: Not applicable

13. Name of professional appraiser: Not applicable

14. Professional appraiser license number: Not applicable

15. Whether the appraisal report is for a limited price, specific price, or special price: No or not applicable

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

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

18. If there is a significant difference in appraisal results, explain the reason and include auditor’s opinion: Not applicable

19. Name of accounting firm: Not applicable

20. Name of auditor: Not applicable

21. Auditor license number: Not applicable

22. Broker and brokerage fees: Not applicable

23. Specific purpose or use of the acquisition or disposal: Leased for office use.

24. Opinions of directors who objected to the transaction: None

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

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

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

28. Valuation amount under Article 16 of the “Regulations on the Acquisition or Disposal of Assets by Publicly Issued Companies”: Not applicable

29. Valuation amount under Article 17 of the same regulations, if the valuation under the previous item is lower than the transaction price: Not applicable

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

31. Other explanatory matters: None