No.1811004577

Independent Verification Report
To: NGK SPARK PLUG CO., LTD.
1. Objective and Scope
Japan Quality Assurance Organization (hereafter “JQA”) was engaged by NGK SPARK PLUG CO., LTD. (hereafter “the Company”) to provide an
independent verification on “FY2022* CSR Data Calculation Report” (hereafter “the Report”). The content of our verification was to express ourconclusion, based on our verification procedures, on whether the statement of information regarding GHG emissions, Energy consumption, Water
consumption and Water discharge, Waste Amount (Effective Utilization and Non Effective Utilization), All Frequency Rate and Lost-Time Injury Frequency
Rate (Employees), All Frequency Rate and Lost-Time Injury Frequency Rate(Temporary Employees) in the Report was correctly measured and calculated,in accordance with the “Standard for Aggregating Rules of Environmental Performance Data (ESKW-027-6)”, “Standard for Aggregating Rules ofEnvironmental Performance Data (Product transportation CO2) (ESKW-030-2)” and “Standard for calculating the Injury frequency rate（E-AS-Y01-4)”(hereafter “the Rules”). The purpose of the verification is to evaluate the Report objectively and to enhance the credibility of the Report.
*The fiscal year 2022 of the Company ended on March 31, 2023.

2. Procedures Performed
JQA conducted verification in accordance with “ISO 14064-3” for GHG emissions and with “ISAE3000” for Energy consumption, Water consumption andWater discharge, Waste Amount (Effective Utilization and Non Effective Utilization), All Frequency Rate and Lost-Time Injury Frequency Rate(Employees), All Frequency Rate and Lost-Time Injury Frequency Rate (Temporary Employees), respectively. The scope of this verification assignment
covers energy-derived CO2 emissions from Scope 1, 2 as GHG emissions, Energy consumption, Water consumption and Water discharge, Waste Amount(Effective Utilization and Non Effective Utilization), All Frequency Rate and Lost-Time Injury Frequency Rate (Employees), All Frequency Rate andLost-Time Injury Frequency Rate (Temporary Employees), GHG emissions from Scope 3 Category 4. The verification was conducted to a limited levelof assurance and quantitative materiality was set at 5 percent each of the total emissions, total amount of Water consumption and Water discharge and Waste,and frequency rates in the Report.
The organizational boundaries of this verification include 34 domestic sites and 33 international sites of the Company and its group companies for Scope 1and 2 GHG emissions, Energy consumption, Water consumption and Water discharge, Waste Amount (Effective Utilization and Non Effective Utilization) ;logistics between plants in Japan for Scope 3 Category 4; and the Company only for All Frequency Rate and Lost-Time Injury Frequency Rate (Employees),
All Frequency Rate and Lost-Time Injury Frequency Rate (Temporary Employees).
Our verification procedures included:• Performing validation of integrated functions to check the Rules.
• On-site assessment at the Company’s 3 domestic sites to check the report boundaries; GHG sources; monitoring points of activity data; monitoringand calculation system; and the activity data. The number and location of sampling sites for on-site assessment were selected by the Company.
• Performing validation of the Rule and verification of Scope 3. Checking calculation scenario and allocation method for Scope 3; monitoring andcalculation system; and emission data.
• Vouching: Cross-checking the calculation results against evidence.

3. Conclusion
Based on the procedures described above, nothing has come to our attention that caused us to believe that the statement of the information regarding theCompany’s FY2022 GHG emissions, Energy consumption, Water consumption and Water discharge, Waste Amount (Effective Utilization and Non
Effective Utilization) and All Frequency Rate and Lost-Time Injury Frequency Rate (Employees), All Frequency Rate and Lost-Time Injury Frequency
Rate (Temporary Employees) in the Report is not materially correct, or has not been prepared in accordance with the Rules.

4. Consideration
The Company was responsible for preparing the Report, and JQA’s responsibility was to conduct verification of GHG emissions, Energy consumption,Water consumption and Water discharge, Waste Amount (Effective Utilization and Non Effective Utilization) and All Frequency Rate and Lost-Time Injury
Frequency Rate (Employees), All Frequency Rate and Lost-Time Injury Frequency Rate (Temporary Employees) in the Report only. There is no conflictof interest between the Company and JQA.

Sumio Asada, Board Director
For and on behalf of Japan Quality Assurance Organization
1-25, Kandasudacho, Chiyoda-ku, Tokyo, Japan
July 6, 2023