- 2019.04.01 SumiRiko Fine Elastomer, Ltd. will be a defunct company due to the absorption merger by SumitomoRiko Company Ltd., the merging company.
- 2018.10.23 Homepage redesigned.
- 2016.10.03 As of 2016 October 3rd, TRI Saitama Ltd has changed its company name to SumiRiko Fine Elastomer, Ltd.
- 2015.06.08 Updated the company information.
- 2012.11.05 Homepage established.
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