Page 371 - 56-1 One Report 2022 EN

Attachment 5 Annual Sub-Committees Report

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6. Internal Audit The Committee reviewed and approved the annual audit plan The plan focuses on risk-based
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proactive audit which aligned with the company’s direction and strategy In addition, the Committee also
reviewed Internal Audit Department’s independence and resource sufficiency.
The Committee also reviewed the performance of the Internal Audit Department on a quarterly basis, evaluated
the annual performance of the Head of Internal Audit, and held a private meeting with the Head of Internal Audit
without the presence of management in order to independently discuss matters that had arisen.
7. Anti-Bribery and Corruption: The Committee reviewed the company’s compliance with the Anti-Corruption Policy
which is aligned with the guidelines of the Office of the National Anti-Corruption Commission (NACC). In addition,
the Committee encouraged the Company to participate in various activities of the Thailand’s Private Sector
Collective Action Coalition Against Corruption.

The Committee emphasized that the giving or receiving of gifts must be transparently performed with care by
considering the necessity. In addition, recipient identity, and clear and complete evidence should be required
when providing charitable contributions and sponsorships.

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8 Corporate Governance The Committee reviewed the Company’s governance practices by applying the
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principles stipulated in the Securities and Exchange Commission’s Corporate Governance Code, along with
other best practice guidelines such as the Stock Exchange of Thailand’ s Principles of Good Corporate
Governance for Listed Companies, the Thai Institute of Directors’ Corporate Governance Criteria, and the ASEAN
Corporate Governance Scorecard. The Committee also reviewed the Company’s compliance with its Corporate
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Governance Policy For the year 2022, the Company was rated “Excellent” in good corporate governance, for
the 10th consecutive year (2013 - 2022) from the Thai Institute of Directors Association (IOD).

9 Whistle-blowing The Committee reviewed the whistle-blowing reports covering all the companies in the group
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and monitored the progress update on issues raised through various channels, which included details of
investigations and corrective actions that were taken on a quarterly basis.
In conclusion, the Audit and Risk Committee had carried out its duties in accordance with the defined charter
completely and effectively. The Committee believes that the Company’s financial statements were presented
fairly, in all material respects, in accordance with Thai Financial Reporting Standards. Moreover, all disclosures
of information were adequate and reliable, while all connected transactions were reasonable and beneficial to
the Company. The Company’s risk management systems and internal control are both adequate and effective.

Furthermore, the Company had complied with all related laws, regulations and good corporate governance
principles without material flaw throughout the year.

( Dr.Porametee Vimolsiri )
Chairman of the Audit and Risk Committee

On behalf of the Audit and Risk Committee
11 January 2023

Attachment 5 Page 3