Sustainable Procurement Policy

AP (Thailand) Public Company Limited and its subsidiaries (the “Company”) are committed to conducting procurement activities responsibly by integrating Environmental, Social, and Governance (“ESG”) principles into the Company’s procurement processes and supplier management practices. The Company seeks to effectively manage supply chain risks, promote transparent, fair, and auditable business operations, and create sustainable long-term value.

1. Scope

This Policy applies to all procurement of goods and services by the Company, including construction contractors, subcontractors, and business partners, throughout the processes of supplier selection, contracting, and performance monitoring and evaluation.

This Sustainable Procurement Policy shall be deemed an integral part of the Company’s “Core Procurement Policy” dated May 15, 2025, including any of its amendments or revisions in the future.

In conducting procurement activities, all relevant parties shall not only take this Sustainable Procurement Policy into consideration, but shall also strictly comply with the Company’s aforementioned Core Procurement Policy.

2. Supplier Standards and Code of Conduct

The Company shall conduct procurement activities systematically and in accordance with stringent control procedures, taking into account requirements relating to quality, price, quantity, timing, service standards, delivery, after-sales service, warranties, and other relevant conditions. The Company requires all suppliers and business partners to comply with all applicable laws and regulations and to strictly adhere to the Supplier Code of Conduct prescribed by the Company, which covers human rights and labor practices, occupational health and safety, environmental management, business ethics, and anti-corruption measures. The Company shall not engage in transactions with any individual or juristic person involved in unlawful conduct, fraud, corruption, or any conduct indicative of corruption, and compliance with such standards shall constitute a condition for conducting business with the Company.

In carrying out procurement activities, the Company shall conduct business fairly and without taking unfair advantage of suppliers or business partners. The Company shall provide accurate, complete, clear, and transparent information, and shall treat all suppliers equitably. The Company shall also listen to suppliers’ opinions and recommendations, promote collaboration in procurement activities for the best interest of the Company, and place emphasis on sustainable supplier management by fostering good relationships, strengthening suppliers’ capabilities, and supporting continuous mutual development.

3. Recruitment and Selection of New Suppliers (Vendors/Contractors)

The Company shall recruit and select new suppliers through a preliminary qualification assessment process, which may include document reviews, interviews, or site visits, depending on the nature of the work and the associated level of risk. In considering supplier selection, the Company shall take into account business stability, credibility, past performance, and the supplier’s ability to meet the Company’s requirements, including capabilities in production, installation, and sourcing materials from appropriate and standardized sources. Suppliers must possess capabilities commensurate with the scope of work and the Company’s standards. The Company shall also, where appropriate, promote procurement from local entrepreneurs and suppliers located within project areas, provided that such support does not compromise standards relating to quality, safety, or business ethics, in order to contribute to local economic and social development. In addition, the Company may impose additional risk control measures for new suppliers that have no prior transaction history with the Company.

All suppliers must be registered in the Approved Vendor List (“AVL”), with the procurement department responsible for categorizing suppliers appropriately. The Company shall regularly review and update supplier information to ensure its accuracy and currency. Suppliers with no transactions with the Company for the prescribed period may have their status suspended in the system until they successfully undergo reassessment in accordance with the Company’s criteria.

4. ESG Integration into Procurement Processes

The Company integrates governance, environmental, and social considerations into procurement processes and the preparation of Terms of Reference (“TOR”), including matters such as waste management, efficient resource utilization, occupational health and safety, and the mitigation of impacts on local communities, in order to enhance operational standards throughout the supply chain.

The Company shall also classify and assess supplier risks using a risk-based approach in managing suppliers’ ESG-related risks, taking into consideration the nature of activities, business significance, and potential impacts. High-risk suppliers shall be subject to an appropriate level of assessment, including in-depth assessments or on-site audits where necessary.

5. Supplier Remediation, Improvement, and Development

Where a supplier is found to be non-compliant with ESG requirements, the Company shall establish a Corrective Action Plan (“CAP”) and monitor the implementation of corrective measures within an appropriate timeframe. The Company shall also support supplier capability development through guidance, training, or technical assistance, as appropriate.

6. Monitoring, Oversight, and Reporting

The Company shall monitor sustainable procurement performance through appropriate key performance indicators and report the results to management or relevant committees. Such performance outcomes shall be used to continuously improve procurement processes and may also be disclosed through sustainability reports and external assessments in accordance with internationally recognized standards.

All executives and employees of AP (Thailand) Public Company Limited and its subsidiaries are required to support, promote, and strictly comply with the Company’s policies and procurement and service management framework.

This Policy was approved by the Board of Directors at its Meeting No. 3/2026 held on March 26, 2026. It shall be reviewed at least annually, or as necessary, in the event of changes that may affect its implementation, to ensure alignment with evolving circumstances and relevant international standards.