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The first rank of corporation | TOHOKU RICOH Co. Ltd.,
Kitatoueiki Factory.Ltd., |
The second rank of corporation | Mitsubishi Materials Corporation, Iwaki
Aomori Prefectural Research Institute for Metal and Mechanical Engineering Industrial Technology Institute, Miyagi Prefectural Government THK.Ltd.,Yamagata factory Mikuni Adec |
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Takao Kayaba,Takao Sakai,Takeo Tsutigawa,Masami Matsui,Nobuki Nagai |