On October 2, 2023, Nippon Piston Ring Co., Ltd. and RIKEN CORPORATION have merged to establish NPR-RIKEN CORPORATION.
For IR information, Please visit NPR-RIKEN CORPORATION's IR website.
FY 2023
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May 12, 2023
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June 7, 2023
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June 23, 2023
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August 10, 2023
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November 14, 2023
FY 2022
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May 13, 2022
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June, 2022
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June 28, 2022
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August 10, 2022
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November 11, 2022
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February 10, 2023
