ATTACHMENT 5 GC POLICY AND PRACTICES OF CORPORATE GOVERNANCE AND BUSINESS CODE OF CONDUCT PTT Global Chemical Public Company Limited operates its business responsibly, transparently, accountably, fairly, ethically and with due regard to all of its stakeholders by adhering to the principles of good corporate governance. The Company recognizes that its adherence to the principles of good corporate governance will contribute to the operational and management efficiency of the Company and a company under GC. The Company also bolsters its credibility and fosters sustainable growth, not only for the Company itself but also for the society and the nation as a whole in order to achieve its vision “To Be a Leading Chemical Company for Better Living.” In order to accomplish such goal, the Board of Directors has integrated the Corporate Governance Policy into the Company’s Business Operations Policy and has made the Corporate Governance and Business Code of Conduct Handbook. This handbook has been distributed throughout the Company since its establishment in order for directors, executives and employees to adhere to code of conduct and all policies when performing their duties. To express intention to develop and improve our good corporate governance to be rated “Excellence” in accordance with international standard, the Company has reviewed and revised the handbook so as to keep them up-to-date, and to keep them abreast of any changes. This handbook must also be in line with business strategies and corporate governance principles, both domestically and internationally. This handbook has been comprehensively communicated to all Directors, Executives and Employees, who have acknowledged and understood it entirely, and are expected to stringently implement the handbook as a guideline for executing their duties. They are also required to inform individuals involved in GC Group’s businesses, namely trading partners, customers and joint-operators, both local and overseas, of our ethical business strategies in order for all concerned parties to understand and comply with these important practices. In this regard, the full details of the Company’s policies and practices from the Corporate Governance and Business Code of Conduct Handbook can be found on the GC website: https://www.pttgcgroup.com/storage/ document/cg-handbook/20210325-pttgc-cg-handbook-en.pdf 392 PTT GLOBAL CHEMICAL PUBLIC COMPANY LIMITED Form 56-1 One Report 2021
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