TCC established the Sustainability Committee and its charter in accordance with Article 26, Paragraph 3 of the "Corporate Governance Principles" and Article 9, Paragraph 1 of the "Sustainable Development Principles," on August 8, 2025. According to the charter, the Sustainability Committee shall meet at least once a year, consisting of at least three members, and shall have at least one director involved in supervision. The chairperson shall be appointed by the Chairman of the Board, while the remaining members shall be appointed from the senior management. All committee members shall possess professional knowledge and capabilities in sustainability development.

Acting under the authority of the Board of Directors, the Committee shall, with due diligence, faithfully perform the following duties and report to the Board.

1. Formulate, promote, and strengthen the Company’s sustainability policies, annual plans, and strategies.
2. Review, monitor, and revise the implementation and performance of sustainability initiatives.
3. Oversee sustainability information disclosure and review the sustainability report.
4. Supervise the implementation of tasks related to TCC’s Sustainable Development Principles or other sustainability-related initiatives resolved by the Board of Directors. (including identification of material topics, formulation of management approaches, strategies, and targets)