Logo header1

Our Approach to ESG and CSR

Editorial Policy

Editorial Policy

Editorial Policy

This report provides an easily understandable and comprehensive report, for interested persons, on the approaches, initiatives, results, issues and current direction of the Mitsubishi Materials Group ("the Group") with regard to sustainable management. It is also intended to elicit opinions and help us to continuously improve the standard of our activities.
This report is in accordance with the core options of the GRI Standards.
From fiscal 2021, this report is published only on the website and electronically (PDF).


Qualitative data: Including group companies, with Mitsubishi Materials Corporation playing a central role.
Quantitative data: Data on group companies is as follows.
  • Greenhouse gas emissions include major consolidated subsidiaries (125 companies)
  • Other environmental data is for major consolidated subsidiaries with manufacturing facilities (71 companies)
  • CSR training data refers to the main companies subject to CSR activities (62 companies).
  • Safety data relates to the 22 major consolidated subsidiaries

Apart from the above, figures related to Mitsubishi Materials on a non-consolidated basis

*For the purposes of this report, the terms “Mitsubishi Materials” and “the Company” refer to Mitsubishi Materials on a non-consolidated basis.

Key Changes to Organizations Subject to Reporting

Since fiscal 2021, New Energy Fujimino Co., Ltd. and one other company have been included in the scope of reporting. In addition, since Mitsubishi Shindoh Co., Ltd. executed an absorption-type merger with the Company as the surviving company, and Diamet Corporation and five other companies sold 100% of their equity, these companies have all been excluded from the scope of reporting.


Fiscal 2021 (April 1, 2020 – March 31, 2021)

*This report may also include information from April 2020 onwards, in an effort to provide the most up-to-date information on the Group.

Date of publication

August 2021 (previous report was published in August 2020)


GRI Standards 2016
GRI Standards GRI Sector Disclosures (Mining and Metals)

*A GRI search function is available via the ESG section of our website.

Principal Reporting Tools

We systematically disclose information on the Group, mainly via the following reporting tools.

Name Summary
ESG report It is a comprehensive report of the plans, objectives, initiatives, results, and detailed data related to the Mitsubishi Materials Group’s ESG management and material issues.
Metals Company
Supplementary Data Book (PDF)
As part of our activities to disclose information through the International Council on Mining and Metals (ICMM), of which we are a member, we publish a supplementary data book containing detailed information on activities carried out by our Metals Company and smelting-related Group companies not included in this ESG report.
Integrated Report (PDF) We produce an annual report on Mitsubishi Materials, aimed chiefly at investors, containing information about the business direction of the MMC Group, such as financial, management and general business information. Its content is reported in an integrated manner, focusing on both financial and non-financial aspects.
Website and ESG site This section features content that supplements the reporting tools above, including ESG data lists, previously reported information, and reports on other activities.

The Process of Compiling

We place great importance on the process of compiling this report. The process is designed with the aim of improving transparency and reliability as a company, in the interests of accountability (with regard to external parties), and of tying in with promoting the Group's sustainable management.

Improving Transparency and Reliability
Having examined and identified ten “material issues” from the perspectives of our stakeholders and management, they provide the basic framework for both our ESG activities and ESG reports. As the environment is constantly changing around us, not least in terms of stakeholder trends, we review our material issues on a regular basis. We also keep a close eye on matters of interest to our stakeholders, their expectations and business conditions, so that we can check and adjust the contents of our reports in precise detail.
To keep track of matters of interest to our stakeholders, their expectations and other related trends, we gather information from individual departments, based on sources such as questionnaires from ESG investors, responses to reader questionnaires, and intensive internal interviews prior to the compilation of the current report. We hold Stakeholder Meetings to discuss topics of particular importance. Meetings also help to establish a clear understanding of social issues, from various different angles, and to examine details of group initiatives.
We also obtain an “independent assurance,” to assist in comprehensively evaluating the contents of our report against international requirements in an effort to improve transparency and reliability.
Promoting ESG Activities based on Communication
We make the most of communication activities, as part of the process of compiling this report, to improve our ability to promote ESG activities, by establishing a shared understanding and raising awareness of changes in the external environment for example.
The Corporate Communications Dept., which oversees our ESG activities, conducts hearings with the relevant corporate and company departments as needed, and not only coordinates the reporting, but also exchanges opinions and shares information about matters of interest or concern to stakeholders, issues for the future, and the direction of our activities.
Asking relevant departments to produce articles for this report, and then exchanging opinions regarding the draft report once it has been compiled, enables departments to review their ESG activities from an external perspective and helps to develop a shared understanding of their strategic significance.