Harsh reality of China petrochemical overcapacity drives Japanese merger

Chinese producers struggle despite exporting billions worth of materials

20250911 sinopec refinery

A Sinopec refinery in Shanghai. The major Chinese petrochemical company will soon dissolve a joint venture with Japan's Mitsui, while grappling with deteriorating earnings as industrial overcapacity spills over internationally. © Getty Images

KENJI KAWASE

TOKYO -- Three major Japanese petrochemical companies this week resorted to merging their plastic materials businesses in a bid to cope with growing competition from China, illustrating how overcapacity in the world's No. 2 economy is straining industries and fueling trade friction across the globe.

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