Corporate Governance and Economic Goals Good Corporate Governance Principles Sustainable Supplier Management Tax Policy Systematic Risk Management

Sustainable Supplier Management

(Disclosure 205-2)

The Company recognizes the importance of supply chain management in creating value and supporting sustainable business operations. The Company therefore focuses on conducting business with suppliers in a transparent and fair manner, while respecting human rights principles to ensure that procurement and business operations at every stage are carried out in accordance with good corporate governance and responsibility toward society and the environment.

The Company has established a Sustainable Procurement Policy and a Supplier Code of Conduct to serve as guidelines for the selection, evaluation, and monitoring of suppliers in alignment with environmental, social, and governance (ESG) principles. These measures aim to reduce risks within the supply chain and ensure that all suppliers conduct their business ethically, transparently, and in compliance with relevant laws.

Supplier Risk Management

In addition, the Company regularly evaluates suppliers in terms of quality, safety management standards, occupational health, environmental management, and compliance with social requirements. The Company also supports supplier capability development through knowledge sharing and training in order to enhance operational standards in alignment with the Company’s sustainable development objectives.

Through these approaches, the Company aims to build a supply chain that is strong, transparent, and resilient, while promoting balanced and sustainable long-term growth together with its suppliers.

Supplier Assessment

The Company conducted an on-site visit to the facilities of a supplier engaged in the manufacturing and distribution of High-Density Polyethylene (HDPE) water pipes in Phetchaburi Province on 21 November 2025. This supplier is an important new supplier of the Company. During the visit, the Company assessed the supplier’s operations in accordance with environmental, social, and governance (ESG) principles, as well as compliance with applicable laws and relevant requirements covering quality, environmental management, occupational health and safety, and the surrounding community, including the Company’s requirements for its suppliers. In addition, the Company reaffirmed its commitment to environmentally and socially responsible business practices with the supplier in order to promote sustainability throughout the supply chain.

Supplier Relationship Development

The Company organized the “ESG Risk Talk: Perspectives on Business, Environment, and a Sustainable Future” on Friday, 17 October 2025, in both onsite and online formats. The session featured two speakers: Mr. Ekaphong Songkroh, Managing Director of ESGPRO and a sustainability expert certified as a GRI Sustainability Professional, and Dr. Watit Prasomsap, Acting Director of the Strategy and Stakeholder Relations Department of the Company. The event aimed to strengthen good relationships between the Company and its stakeholders, as well as to communicate and enhance understanding of environmental, social, and governance (ESG) issues among suppliers. It also served as a forum for exchanging views and perspectives, which would contribute to sustainable business development. The event received a positive response from more than 64 supplier companies.

Based on the evaluation results, 53 participants (88.33%) completed the assessment, summarized as follows:

  • Satisfaction with the presentation topics received an average score at a very good level of 82.64%.
  • Overall satisfaction with the event received an average score at a good level of 77.36%.