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Tianjin University
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Shanghai sanaisi
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Shanghai University of Technology
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Guangzhou Chemical Reagent Factory
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Xilong chemical
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Nanjing reagent
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Beijing chemical plant
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Jiangxi Normal University
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Shenyang Chemical Reagent Factory
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Peking University
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Beijing University of Chemical Technology
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Tsinghua University
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Guangxi Normal University
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Hunan Normal University
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