单项选择题

A．Mitsubishi Petrochemical
B．Mitsui petrochemical industries and Shin-Etsu
C．Sumitomo Chemical
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单项选择题
A．Kawasaki plantB．Mitsui petrochemicalC．Mitsubishi Kasei
A．Kawasaki plant
B．Mitsui petrochemical
C．Mitsubishi Kasei
单项选择题
A．Mitsubishi KaseiB．Mitsubishi petrochemicalC．Mitsui Petrochemical industries
A．Mitsubishi Kasei
B．Mitsubishi petrochemical
C．Mitsui Petrochemical industries
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