单项选择题

A．Mitsubishi Petrochemical
B．Shin-Etsu
C．Mitsui Petrochemical Industries
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单项选择题
A．Shin-EtsuB．Mitsubishi KaseiC．Mitsui petrochemical
A．Shin-Etsu
B．Mitsubishi Kasei
C．Mitsui petrochemical
单项选择题
A．Mitsubishi PetrochemicalB．Mitsui petrochemical industries and Shin-EtsuC．Sumitomo Chemical
A．Mitsubishi Petrochemical
B．Mitsui petrochemical industries and Shin-Etsu
C．Sumitomo Chemical
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