The Board of Directors has appointed Ms. Pommara Patthanabhumthanint as the Company Secretary (her profile is provided in Attachment 1 of the 2026 Form 56-1 One Report), with the following duties and responsibilities:

1. To prepare and maintain the following documents:
   • The register of directors;
   • Notices of Board of Directors’ meetings, minutes of Board meetings, and the Company’s annual report; and
   • Notices of shareholders’ meetings and minutes of shareholders’ meetings.
2. To maintain reports on interests submitted by directors or executives and provide copies thereof to the Chairman of the Board and the Chairman of the Audit Committee within seven business days from the date the Company receives such reports.
3. To establish and maintain a document retention system for records and evidence relating to the following information:
   • Information supporting matters proposed for shareholders’ approval;
   • Financial statements and reports on the Company’s financial position and operating results, or any other reports required to be disclosed under Sections 56, 57, 58, or 199 of the Securities and Exchange Act;
   • The Company’s opinion in the event of a tender offer for the Company’s securities; and
   • Any other information or reports concerning the Company’s business prepared for dissemination to shareholders or the public, as prescribed by the Capital Market Supervisory Board.

   The Company Secretary shall ensure that such documents and records are accurately maintained, complete, and readily verifiable for a period of not less than five years from the date of preparation. Such document retention may be in electronic form or any other system that enables retrieval without alteration of the original content.

4. To perform any other duties as prescribed by notifications of the Capital Market Supervisory Board.
5. To perform duties with responsibility, due care, honesty, and integrity, and in compliance with applicable laws, the Company’s objectives, Articles of Association, resolutions of the Board of Directors, and resolutions of the shareholders’ meeting, and shall refrain from any act that may materially conflict with the interests of the Company.
6. To perform duties with the degree of care, diligence, and prudence that a person undertaking such business would reasonably exercise under the same circumstances by ensuring that:
   • Decisions are made in good faith and on reasonable grounds, with due regard to the best interests of the Company;
   • Decisions are made based on information reasonably believed in good faith to be adequate; and
   • Decisions are made without any direct or indirect personal interest in the matter under consideration.