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Toshiro OKAMURA
Shimodate Research Lab., Hitachi Chemical Co., Ltd.
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Toshiaki ISHIMARU
Ibaraki Research Lab., Hitachi Chemical Co., Ltd.
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Akishi NAKASO
Shimodate Research Lab., Hitachi Chemical Co., Ltd.
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Tetsuro IRINO
Shimodate Works, Hitachi Chemical Co., Ltd.
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Hiroyoshi YOKOYAMA
Ninomiya Works, Hitachi AIC Inc.