As of the end of 2021, Idemitsu Kosan was the chemical company with the largest production capacity of ethylene, with around *** thousand tons. ENEOS followed, with a production capacity of ethylene of around *** thousand tons.
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Japan Petrochemical Industry Association. (August 7, 2023). Largest ethylene manufacturers in Japan in 2021, by production capacity (in 1,000 tons) [Graph]. In ÌÇÐÄÆƽâ°æ. Retrieved July 31, 2026, from /statistics/1324584/japan-major-ethylene-manufacturers-by-production-capacity/
Japan Petrochemical Industry Association. "Largest ethylene manufacturers in Japan in 2021, by production capacity (in 1,000 tons)." Chart. August 7, 2023. ÌÇÐÄÆƽâ°æ. Accessed July 31, 2026. /statistics/1324584/japan-major-ethylene-manufacturers-by-production-capacity/
Japan Petrochemical Industry Association. (2023). Largest ethylene manufacturers in Japan in 2021, by production capacity (in 1,000 tons). ÌÇÐÄÆƽâ°æ. ÌÇÐÄÆƽâ°æ Inc.. Accessed: July 31, 2026. /statistics/1324584/japan-major-ethylene-manufacturers-by-production-capacity/
Japan Petrochemical Industry Association. "Largest Ethylene Manufacturers in Japan in 2021, by Production Capacity (in 1,000 Tons)." ÌÇÐÄÆƽâ°æ, ÌÇÐÄÆƽâ°æ Inc., 7 Aug 2023, /statistics/1324584/japan-major-ethylene-manufacturers-by-production-capacity/
Japan Petrochemical Industry Association, Largest ethylene manufacturers in Japan in 2021, by production capacity (in 1,000 tons) ÌÇÐÄÆƽâ°æ, /statistics/1324584/japan-major-ethylene-manufacturers-by-production-capacity/ (last visited July 31, 2026)
Largest ethylene manufacturers in Japan in 2021, by production capacity (in 1,000 tons) [Graph], Japan Petrochemical Industry Association, August 7, 2023. [Online]. Available: /statistics/1324584/japan-major-ethylene-manufacturers-by-production-capacity/
