# Sumitomo Chemical

DL-Methionine — qualified multi-origin methionine source.

Source: https://en.bioecon.ru/companies/sumitomo-chemical/
Updated: 2026-07-07

- Country: Japan

## Verifiable facts

| Fact | Value | Source |
| --- | --- | --- |
| Capacity | approximately 250,000 metric tons per year (total), following an expansion of 100,000 metric tons per year completed in 2018 | https://sumitomo-chem-agro.com/sumitomo-chemical-holds-a-completion-ceremony-for-its-new-plant-of-feed-additive-methionine-in-ehime/, https://www.sumitomo-chem.co.jp/english/news/detail/20160519.html |
| Production site | Ehime Works in Niihama City, Ehime Prefecture, Japan | https://sumitomo-chem-agro.com/sumitomo-chemical-holds-a-completion-ceremony-for-its-new-plant-of-feed-additive-methionine-in-ehime/, https://www.sumitomo-chem.co.jp/english/ir/individual/factory/, https://www.sumitomo-chem.co.jp/english/news/detail/20160519.html |
| Headcount | 29,279 employees (consolidated, as of March 31, 2025) | https://www.sumitomo-chem.co.jp/english/ir/event/files/docs/260514e_2.pdf, https://www.sumitomo-chem.co.jp/english/sustainability/information/library/files/docs/SCSR25e_p4-5.pdf |
| Certification | Sumika Sustainable Solution certification for products contributing to environmental burden reduction [medium confidence] | https://www.sumitomo-chem.co.jp/english/ir/event/files/docs/e_MorganStanley_MUFG_Chemicals_Conference.pdf |
| Regulatory approval | Subject to U.S. antidumping investigations for imports from Japan; not an approval in the sense of clearance, but a regulatory status update regarding sales at less than fair value | https://www.federalregister.gov/documents/2021/07/23/2021-15755/methionine-from-japan-final-affirmative-determination-of-sales-at-less-than-fair-value-and-final |

Independent sources: federalregister.gov, sumitomo-chem-agro.com, sumitomo-chem.co.jp

## Technologies

- [Amino acids for feed (lysine, methionine, threonine, tryptophan)](https://en.bioecon.ru/technology/amino-acids-feed-additives/)