# Mitsui Chemicals to expand MDI capacity at Kumho Mitsui Chemicals in South Korea

Mitsui Chemicals decided to increase MDI production capacity at its joint venture Kumho Mitsui Chemicals in Yeosu, South Korea, by 100,000 tonnes per year to 710,000 tonnes per year. Construction starts February 2026, completion May 2027. Investment is 35 billion won.

- Type: Expansion
- Announced: 2025-12-18
- Where: Yeosu, Jeollanam-do, South Korea
- Value: $26.0M (35.0B KRW)
- Starts operating: May 2027
- Status: announced
- Capacity: 100,000 tonnes per year MDI
- Products: MDI (methylene diphenyl diisocyanate)
- Sectors: [Specialty Chemicals](https://endata.com/sectors/specialty-chemicals.md), [Plastics and Polymers](https://endata.com/sectors/plastics-polymers.md)

## Companies

- [Mitsui Chemicals](https://endata.com/companies/19809.md)
- [Kumho Mitsui Chemicals Corp.](https://endata.com/companies/26031.md) (partner)

## Sources

- [plastinfo.ru](https://plastinfo.ru/information/news/56364_18.12.2025/), 2025-12-18: "Mitsui Chemicals прогнозирует, что спрос на МДИ будет во всем мире расти ежегодно на 5% из-за принимаемых мер по улучшению теплоизоляции жилых помещений."

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Data from Endata (https://endata.com/). Announcements are summarized from public sources and may be incomplete; check the linked originals.