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Isao Kohiyama is currently the Chief Operating Officer-IT & Communication at Mitsui & Co., Ltd.
He was previously the President & Chief Executive Officer at MITSUI KNOWLEDGE INDUSTRY Co., Ltd.

Yoshio Kohiyama is currently working as an Auditor at FTGroup Co. Ltd., J-ONE, Inc., IFNet, Inc., Japan TSS KK, Sundex, Inc., and Next, Inc. He previously worked as an Auditor at IPNetService, Inc.