In 2022, the Company changed its materiality determination methodology in reference to GRI Universal Standards 2021 GRI 3: Material Topics 2021 in consideration with the Double Materiality and Multi-stakeholder Approach. This is to provide an overview of the operation, including both financial and non-financial impacts on stakeholders, society, and the environment (Outward Impact) and on the business itself (Inward Impact).

The Company has conducted both negative and positive impact identification and identified its actual and potential impacts on the economy, environment, people and society, including impacts on their human rights, across the organization’s activities and business relationships, such as its suppliers and contractors, throughout the value chain. The impact assessment included both actual and potential impacts, and assessed the importance of the impacts by referencing the OECD Due Diligence Guidance for Responsible Business Conduct. AMATA executives, experts in each field from the relevant departments within the organization, together with external sustainability consultants, assessed the significance of the impacts by considering their severity, scope, likelihood, and irremediable character, with information gathered from affected stakeholders. 

The Company grouped significant impacts into environmental, social, and governance topics (ESG topics). Additionally, the Company considered further topics arising from stakeholder engagement and external factors that may affect the Company either positively or negatively such as global and regional changes, sustainability trends and directions, materiality of peers in the same industry, topics prescribed in industry standards and sustainability assessments, and issues of global concern.