This report is prepared focusing on the Seoul office, research center, and production headquarters, which correspond to domestic business sites. Environmental data is prepared centered on domestic business sites, and some social data (Employee, Safety and Health, Ethics, etc.) include global status. Financial data is based on consolidated performance.

Sustainability management performance is reported from January 1, 2022, to December 31, 2022. Quantitative results are disclosed together with more than three-year results so that stakeholders can see the change. The first half of 2023 is also reported on some major issues or significant activities and achievements.

We have met the core options of the Global Reporting Initiative's (GRI) Sustainability Reporting Standards (GRI Standards). To reflect the sustainability context of our industry, we applied the U.S. Sustainability Accounting Standards Board's (SASB) sustainability accounting standards and utilized the recommendations of the Task Force on Climate-related Financial Disclosures (TCFD) for climate change adaptation information.

The financial information contained in this report was prepared through an independent audit firm's accounting audit. Non-financial information was verified by With Accounting Corp., an independent professional organization, and KMR, a management certification provider to increase the report's accuracy and reliability.