ESG Data

The environmental performance indicators for FY2024 marked with have been assured by KPMG AZSA Sustainability Co., Ltd., an independent third party. For the assurance report by the third party, please refer to the “Independent Assurance Report” tab above.

1. *Certain reported data show a significant decrease for FY2024 due to the exclusion of SCM Minera Lumina Copper Chile, the operator of the Caserones Copper Mine, from the reporting boundary following its sale.
2. *1The volumes of raw materials and principal products include the share owned by Pan Pacific Copper Co., Ltd., which was reclassified from a consolidated subsidiary to an equity-method affiliate in March 2024, in consideration of its operational closeness to our business.
3. *2Includes thermal energy (steam, hot water, and cold water) supplied by third parties.

1. *1The volumes of raw materials and major products include the share attributable to Pan Pacific Copper Co., Ltd., which changed from a consolidated subsidiary to an equity-method affiliate of the Company in March 2024, taking into account the operational closeness in our business activities.

(1) Ratio of recycled raw materials in incoming raw materials for the copper smelting business
(total dry volume of recycled raw materials processed at JX Metals Smelting Co., Ltd. ^*2) ÷ (total dry volume of primary and recycled raw materials processed at JX Metals Smelting Co., Ltd.) x 100 (Unit: %)

1. *2However, the dry volume of recycled raw materials before pretreatment is calculated based on the pretreatment residue ratio if recycled raw materials are pretreated at JX Advanced Metals Corporation plants or affiliates, other than JX Metals Smelting Co., Ltd. and the dry volume of recycled raw materials before pretreatment is available.

(2) Ratio of copper from recycled raw materials in electrolytic copper
(volume of copper derived from recycled raw materials in copper anodes per year ^*3) ÷ (copper anode charge per year)

1. *3Cumulative 12-month total of figures calculated monthly with (monthly copper anode charge in the electrorefining process at JX Advanced Metals Smelting Co., Ltd.) x (ratio of copper from recycled raw materials in copper anode^*4*5).
2. *4(Total volume of copper in recycled raw materials processed by JX Advanced Metals Smelting Co., Ltd. for the month) x (copper yield at Saganoseki Smelter & Refinery for the month) ÷ (total copper in net copper production at Saganoseki Smelter & Refinery for the month)
3. *5In the electrorefining process, copper anodes are electrolyzed to produce electrolytic copper. Here, there is no input of copper components other than copper anodes. Therefore, the recycling ratio in copper anodes charged in the process is equal to the recycling ratio in electrolytic copper.

1. *1Seawater usage at the Saganoseki Smelter & Refinery of JX Metals Smelting Co., Ltd. is calculated based on pumping capacity. Freshwater usage at the Saganoseki Smelter & Refinery of JX Metals Smelting Co., Ltd. and water usage at other operating sites are based on flowmeter readings or on invoices from the site's respective water utility.
2. *2The volume of water discharged into public waters (oceans and rivers) at each operating site represents the following: the volume calculated based on drainage weirs (Hitachi Works, Isohara Works, JX Metals Tomakomai Chemical Co., Ltd., and JX Metals Mikkaichi Recycle Co., Ltd.); the volume obtained by multiplying groundwater usage by a fixed rate (Kurami Works, Toho Titanium Co., Ltd.'s Chigasaki Plant); the volume from invoices (Toho Titanium Co., Ltd.'s Yahata Plant and Kurobe Plant); or the volume based on flowmeter readings (other operating sites). The volume of water discharged into the sewage system at each operating site represents the following: the volume calculated based on daily water discharge (TANIOBIS Co., Ltd.); or the volume based on flowmeter readings or on invoices from the site's respective sewage utility for other operating sites.

The social performance indicators for FY2024 marked with have been assured by KPMG AZSA Sustainability Co., Ltd., an independent third party. For the assurance report by the third party, please refer to the “Independent Assurance Report” tab above.

Survey subjects: Employees of the Company and those seconded from the Company to JX Metals Environmental Co., Ltd. and JX Metals Smelting Co., Ltd. (Saganoseki Smelter & Refinery and Hitachi Works).

Survey scope: Companies in which JX Advanced Metals has 50% or more of their voting rights, directly or indirectly
Treatment of seconded employees: Employees seconded from companies outside of survey scope to companies inside of survey scope are counted. Employees seconded from companies inside of survey scope to companies outside of survey scope are also counted.

Reporting Period and Scope of ESG Data

JX Advanced Metals (the “Company”): JX Advanced Metals Corporation.
The JX Advanced Metals Group (the “Group”): JX Advanced Metals Corporation and subsidiaries. However, the company subject to reporting may differ according to the Reporting Field (see Reporting Scope for details).

April 2024 - March 2025
Covers business activities during fiscal year 2024.

Covers the Company and its domestic and overseas group companies. The reporting scope for each field is as follows. If the reporting scope for an individual indicator differs from that shown in the table below, it is noted separately.

To the President & Representative Director, CEO of JX Advanced Metals Corporation

Conclusion

We have performed a limited assurance engagement on whether selected environmental and social performance indicators (the “subject matter information” or the “SMI”) presented in JX Advanced Metals Corporation’s (the “Company”) ESG Data Webpage (https://www.jx-nmm.com/english/sustainability/esg-data/) (the “Webpage”) as of and for the year ended March 31, 2025 and for the year ended December 31, 2024 have been prepared in accordance with the criteria (the “Criteria”), which are established by the Company and are explained in the Webpage. The SMI subject to the assurance engagement is indicated in the Webpage with the symbol “”.
Based on the procedures performed and evidence obtained, nothing has come to our attention to cause us to believe that the Company’s SMI as of and for the year ended March 31, 2025 and for the year ended December 31, 2024 is not prepared, in all material respects, in accordance with the Criteria.

Basis for Conclusion

We conducted our engagement in accordance with International Standard on Assurance Engagements (ISAE) 3000 (Revised), Assurance Engagements Other Than Audits or Reviews of Historical Financial Information, and International Standard on Assurance Engagements (ISAE) 3410, Assurance Engagements on Greenhouse Gas Statements, issued by the International Auditing and Assurance Standards Board (IAASB). Our responsibilities under those standards are further described in the “Our responsibilities” section of our report.
We have complied with the independence and other ethical requirements of the International Code of Ethics for Professional Accountants (including International Independence Standards) issued by the International Ethics Standards Board for Accountants (IESBA).
Our firm applies International Standard on Quality Management (ISQM) 1, Quality Management for Firms that Perform Audits or Reviews of Financial Statements, or Other Assurance or Related Services Engagements, issued by the IAASB. This standard requires the firm to design, implement and operate a system of quality management, including policies or procedures regarding compliance with ethical requirements, professional standards and applicable legal and regulatory requirements.
We believe that the evidence we have obtained is sufficient and appropriate to provide a basis for our conclusion.

Other information

Our conclusion on the SMI does not extend to any other information that accompanies or contains the SMI (hereafter referred to as “other information”). We have read the other information but have not performed any procedures with respect to the other information.

Responsibilities for the SMI

Management of the Company are responsible for:

• designing, implementing and maintaining internal controls relevant to the preparation of the SMI that is free from material misstatement, whether due to fraud or error;
• selecting or developing suitable criteria for preparing the SMI and appropriately referring to or describing the criteria used; and
• preparing the SMI in accordance with the Criteria.

Inherent limitations in preparing the SMI

As described in the Webpage, GHG emissions quantification is subject to uncertainty when measuring activity data, determining emission factors, and considering scientific uncertainty inherent in the Global Warming Potentials. Hence, the selection by management of a different but acceptable measurement method, activity data, emission factors, and relevant assumptions or parameters could have resulted in materially different amounts being reported.

Our responsibilities

We are responsible for:

• planning and performing the engagement to obtain limited assurance about whether the SMI is free from material misstatement, whether due to fraud or error;
• forming an independent conclusion, based on the procedures we have performed and the evidence we have obtained; and
• reporting our conclusion to the Company’s management.

Summary of the work we performed as the basis for our conclusion

We exercised professional judgment and maintained professional skepticism throughout the engagement. We designed and performed our procedures to obtain evidence about the SMI that is sufficient and appropriate to provide a basis for our conclusion. Our procedures selected depended on our understanding of the SMI and other engagement circumstances, and our consideration of areas where material misstatements are likely to arise. In carrying out our engagement, the procedures we performed primarily consisted of:

• assessing the suitability of the criteria applied to prepare the SMI;
• conducting interviews with the relevant personnel of the Company to obtain an understanding of the key processes, relevant systems and controls in place over the preparation of the SMI;
• performing analytical procedures including trend analysis;
• identifying and assessing the risks of material misstatements;
• performing a site visit at one of the Company’s sites in Japan which was determined through our risk assessment;
• performing, on a sample basis, recalculation of amounts presented as part of the SMI;
• performing other evidence gathering procedures for selected samples; and
• evaluating whether the SMI was presented in accordance with the Criteria.

The procedures performed in a limited assurance engagement vary in nature and timing from, and are less in extent than for, a reasonable assurance engagement. Consequently, the level of assurance obtained in a limited assurance engagement is substantially lower than the assurance that would have been obtained had a reasonable assurance engagement been performed.

Notes to the Reader of Independent Assurance Report:
This is a copy of the Independent Assurance Report and the original copies are kept separately by the Company and KPMG AZSA Sustainability Co., Ltd.

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