Taiwan Plastics Announces Change of Auditor for Joint Venture Fujian Gulei Petrochemical Co., Ltd.

1. Date of Board Approval (Date of Event): 115/08/25

2. Name of Former Accounting Firm: KPMG Huazhen Certified Public Accountants (Special General Partnership) Xiamen Office

3. Name of Former Auditor 1: Wang Jingya

4. Name of Former Auditor 2: Jiang Xiang

5. Name of New Accounting Firm: Deloitte Touche Tohmatsu Certified Public Accountants (Special General Partnership) Xiamen Office

6. Name of New Auditor 1: Peng Jinyong

7. Name of New Auditor 2: Cai Kunhao

8. Reason for Auditor Change: Company management requirements

9. Explanation of whether the company proactively terminated the appointment, ceased reappointment, or the former auditor proactively resigned or declined reappointment: Fujian Gulei Petrochemical Co., Ltd. has decided not to continue the appointment.

10. Date the company notified or received notification of termination: 115/08/25

11. Whether the financial reports filed or to be prepared in the past two years have been adjusted by auditors or included recommendations for significant improvements in internal controls: No

12. Whether the company disagrees with the above adjustments or recommendations (if there are disagreements, please detail the nature of each item, the company's original treatment method, final resolution, and the successor auditor's written opinion on each matter): No

13. Before formally appointing the successor auditor, did the company consult with the auditor regarding the handling of adjustments and recommendations made by the former auditor and the potential audit opinion on the financial statements (if yes, please state the inquiry and outcome): No

14. Confirmation of whether the company has authorized the former auditor to fully respond to reasonable inquiries from the successor auditor (including matters of disagreement mentioned above): Yes

15. Other Matters to be Disclosed: Fujian Gulei Petrochemical Co., Ltd. is a joint venture in which the company holds an investment exceeding 10% of its net assets. This announcement is made on behalf of the company in accordance with the Taiwan Stock Exchange Corporation's Procedures for Verification and Public Disclosure of Material Information by Listed Companies.