based on a survey of the Ministry of Economy, Trade, and Industry
Supplementary notes
*The company name changed to ENEOS NUC in January 2021.
**JNC Petrochemical and Maruzen Petrochemical's high-density polyethylene is sold by Keiyo Polyethylene, a fifty-fifty joint venture between the two companies.
Citation formats
Major manufacturers of polyolefin Japan 2021, by production capacity
As of the end of 2021, Prime Polymer was the chemical company with the largest production capacity of polyolefin in Japan. It had a production capacity of *** thousand tons for polypropylene, *** thousand tons for high density polyolefin, and ** thousand tons for low density polyolefin.
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Japan Petrochemical Industry Association. (August 7, 2023). Largest polyolefin manufacturers in Japan in 2021, by production capacity (in 1,000 tons) [Graph]. In ÌÇÐÄÆƽâ°æ. Retrieved July 30, 2026, from /statistics/1324586/japan-major-polyolefin-manufacturers-by-production-capacity/
Japan Petrochemical Industry Association. "Largest polyolefin manufacturers in Japan in 2021, by production capacity (in 1,000 tons)." Chart. August 7, 2023. ÌÇÐÄÆƽâ°æ. Accessed July 30, 2026. /statistics/1324586/japan-major-polyolefin-manufacturers-by-production-capacity/
Japan Petrochemical Industry Association. (2023). Largest polyolefin manufacturers in Japan in 2021, by production capacity (in 1,000 tons). ÌÇÐÄÆƽâ°æ. ÌÇÐÄÆƽâ°æ Inc.. Accessed: July 30, 2026. /statistics/1324586/japan-major-polyolefin-manufacturers-by-production-capacity/
Japan Petrochemical Industry Association. "Largest Polyolefin Manufacturers in Japan in 2021, by Production Capacity (in 1,000 Tons)." ÌÇÐÄÆƽâ°æ, ÌÇÐÄÆƽâ°æ Inc., 7 Aug 2023, /statistics/1324586/japan-major-polyolefin-manufacturers-by-production-capacity/
Japan Petrochemical Industry Association, Largest polyolefin manufacturers in Japan in 2021, by production capacity (in 1,000 tons) ÌÇÐÄÆƽâ°æ, /statistics/1324586/japan-major-polyolefin-manufacturers-by-production-capacity/ (last visited July 30, 2026)
Largest polyolefin manufacturers in Japan in 2021, by production capacity (in 1,000 tons) [Graph], Japan Petrochemical Industry Association, August 7, 2023. [Online]. Available: /statistics/1324586/japan-major-polyolefin-manufacturers-by-production-capacity/
