Data time: 

January 1, 2025 to December 31, 2025.

Organizational Boundaries:

This Report outlines ESON Precision Engineering Co. Ltd.’s and its subsidiaries’ promotion and performance of its social sustainability policies in the areas of operational strategies and economic

performance, information security, corporate governance and integrity management, climate change and adaptation, talent development, and occupational health and safety, covering the period from

January 1, 2025 to December 31, 2025.

The scope of information disclosure in this Report is consistent with the consolidated entities included in the Company’s consolidated financial statements. Please refer to the Company’s 2025

consolidated financial reports at https://www.eson.tw/index.php?c=category&id=30 for details on the entities included in the preparation of the consolidated financial statements. If boundaries of specific

data or information differ from those of the consolidated financial reports, supplementary notes will be provided. Please refer to the Appendix for the reference table of company abbreviations and full legal names used in this Report.

The statistical data disclosed in this Report is sourced from the Company’s internal statistics and survey results, presented using internationally accepted indicators. Any estimates will be specified in

the relevant chapters.