Industrial Activities
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Nichidensha Co. Ltd. (December, 2008)
Taiyokogyo Co.,Ltd. (September, 2008) Ohnuki Manufacturing Industry Co., Ltd (May, 2008) TMP Co., Ltd. (April, 2008) Shinnetsu Co., Ltd. (March, 2008)
Takahashi Industry Co., Ltd. (November, 2007)
IKD Co., Ltd. (November, 2007)
Heart Envelope Co., Ltd. (November, 2007)
Nissho Co., Ltd. (November, 2007)
Kawamura Ltd. (October, 2007)
Kadowaki Co. Ltd. (October, 2007)
Hitachi Giken Co., Ltd. (October, 2007)
Star Engineering Co. Ltd. (October, 2007)
Yamazaki Works, Hitachi Chemical Co., LTD (August, 2007)
Hitaka Works, Hitachi Cable, Ltd. (July, 2007)
Power Systems Hitachi Works, Hitachi, Ltd. (May, 2007)