Procurement of environmentally friendly materials (Green Procurement) (FTSE: ESC12, GRI 204-1, TNFD, SASB Supply Chain Management)
The Company believes that sustainable success must be based on systematic social and environmental responsibility in all business processes of the Company and its suppliers. Therefore, it has established a responsible sourcing policy to ensure that the Company's procurement or sourcing processes help reduce negative impacts on the environment, society, and economy throughout the supply chain, while creating value and sustainability for all stakeholders, and operating transparently and respecting human rights as a priority.
In 2025, the Company focuses on promoting supplier operations and supporting green procurement and the selection of construction materials with environmental standards. This is for procurement that considers environmental, social, and governance (ESG) principles, which not only helps reduce negative impacts but also promotes the responsible growth of suppliers and enhances the Company's long-term competitiveness.
The Company promotes supply chain traceability for key construction materials to prevent risks related to human rights violations, ecosystem destruction, and unsustainable resource use.

| 2023 | 2024 | 2025 | |
|---|---|---|---|
| Proportion of local procurement (Thailand) | 13% | 14% | 16% |
| Proportion of environmentally friendly construction material purchases out of total orders | N/A | 54% | 51%* |
*In 2025, the proportion of procurement significantly decreased due to a reduction in construction projects.