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Takashi MATSUOKA
Central Research Laboratories, Sumitomo Metal Industries, Ltd.
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Toshihiko KAWAI
Wakayama Steel Works, Sumitomo Metal Industries, Ltd.
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Yoshihiko HOBO
Wakayama Steel Works, Sumitomo Metal Industries, Ltd.
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Shin-ya UEDA
Wakayama Steel Works, Sumitomo Metal Industries, Ltd.