Environmental Burdens from Business Activities
Understanding the environmental impact of our business activities is the first step in environmental conservation efforts. We will work to reduce our environmental burden by understanding the amount of inputs (INPUT) such as raw materials and energy used by our group, and the amount of CO2 and waste emitted outside the group as a result of our business activities (OUTPUT).
The material balance representing input and output is shown in the diagram below.

*1 The aggregation range for each quantity reported in INPUT and OUTPUT is indicated by ●.
*2 Domestic group companies refer to NITTOKU ALPHA SERVICE, CERAMIC SENSOR, NTK CERAMIC, NANSEI CEREMIC, SparkTec WKS, MORIMURA SOFC TECHNOLOGY, NTK CERATEC Komaki Plant, Niterra Materials, which have obtained multi-site certification, and NTK CERATEC Sendai/Sendai West Plant, which have obtained individual company certification.
*3 Overseas subsidiaries refer to overseas manufacturing and sales subsidiaries, including Niterra(Shanghai), Niterra(Changshu), Niterra (Thailand), Siam Niterra, Niterra ASIA, Niterra Malaysia, Niterra Mobility Indonesia, Niterra India, Niterra North America, WELLS VEHICLE ELECTRONICS, L.P., Niterra do Brazil, Niterra South Africa, and CAIRE, as well as overseas sales subsidiaries. *4* This refers to TAIWAN Niterra, Niterra Vietnam, Niterra Philippines, Niterra Australia, Niterra Mexico, Niterra EMEA, Niterra UK, and Niterra France.
*4 Overseas sales subsidiaries only include energy-related CO2 emissions in their calculations.
We have received the following verification report from the Japan Quality Assurance Organization (JQA) regarding our calculations for energy consumption and associated greenhouse gas emissions, water consumption and emissions, emissions (effectively utilized/uneffectively utilized), and greenhouse gas emissions from logistics between our and our group companies' domestic factories in fiscal year 2025.