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Keiichi Yumita occupe le poste de responsable des systèmes d'information chez Toshiba Corp. Il est également membre du conseil d'administration de Toshiba Digital Solutions Corp.

Hachihei Yumita currently works at Yumita Kensetsu KK, as President & Representative Director.

Keiichi Kato worked as an Auditor at BrainPad, Inc.

Keiichi Ichikawa worked as a Statutory Auditor at Nippon Steel Drum Co., Ltd.

Keiichi Okumura is currently the Chairman at OKUMURA ENGINEERING Corp.
He previously worked as the President & Representative Director at Japan Waste Corp.
and as an Executive Officer at Asahi Pretec Corp.

Keiichi Konaga was the Chairman of the Research Institute of Economy Trade & Industry.
He was also an Independent Outside Director at Tokyu Corp.
In addition, he participated in Fuji Oil Co., Ltd.
from 2010 to 2012.
From 1989 to 2003, he worked at Arabian Oil Co., Ltd.
and became the President in 2003.