Sinopec Announces Subsidiary Dingyue Development to Acquire Right-of-Use Asset from Related Party

1. Name and nature of the subject property (e.g., land located at Section XX, Subsection XX, Beitun District, Taichung City): Right-of-use asset for part of the 3rd floor office space at No. 12, Dongxing Road, Songshan District, Taipei City

2. Event date: 115/6/25 ~ 115/6/25

3. Board approval date: Not applicable

4. Other approval dates: Approval level: Sinopec Vice President June 25, 115

5. Quantity of units (e.g., XX square meters, equivalent to XX ping), unit price, and total transaction amount: Transaction quantity: Leased area of 62.58 ping; unit price: NT$2,100 per ping per month (tax-included); Monthly rent: NT$131,418 (tax-included); lease term: 12 months; Total right-of-use asset amount: NT$1,479,449 (pre-tax)

6. Counterparty and its relationship with the company (if the counterparty is a natural person and not a related party of the company, name disclosure may be omitted): Counterparty: China Petrochemical Development Corporation Relationship with the company: Related enterprise

7. If the counterparty is a related party, state the reason for selecting them, previous transferor, relationship among previous transferor, the company and the counterparty, previous transfer date, and transfer amount: Reason for selecting related party as counterparty: Location meets company requirements. Relationship among previous transferor, company, and counterparty: Not applicable. Previous transfer date and amount: Not applicable.

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

9. Estimated gain (or loss) on disposal (not applicable for asset acquisition) (if deferred, list recognition details): Not applicable

10. Delivery or payment terms (including payment periods and amounts), contractual restrictions, and other important provisions: Payment terms: Monthly rent of NT$131,418 (tax-included) Lease term: From July 1, 115 to June 30, 116

11. Method of determining this transaction (e.g., bidding, comparison, or negotiation), reference basis for price determination, and decision-making unit: Transaction determination method: Price negotiated based on market conditions Decision-making unit: Board of Directors

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

13. Name of professional appraiser: Not applicable

14. License number of professional appraiser: Not applicable

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

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

17. Reason for not obtaining appraisal report: Not applicable

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

19. Auditor firm name: Not applicable

20. Auditor name: Not applicable

21. Auditor license number: Not applicable

22. Broker and brokerage fees: Not applicable

23. Specific purpose or use of acquisition or disposal: For office use

24. Opinion of director who objected to this transaction: None

25. This transaction is a related-party transaction: Yes

26. Supervisor approval or audit committee consent date:

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

28. Evaluation price under Article 16 of the 'Asset Acquisition and Disposal Rules for Publicly Issued Companies': Not applicable

29. Evaluation price under Article 17 if the price in the previous item is lower than transaction price: Not applicable

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

31. Other explanatory matters: Contract signing to follow after upcoming board approval