# Mitsui Chemicals to expand MR lens material production at Omuta Works

Mitsui Chemicals announced plans to boost production capacity for its MR series high-refractive-index ophthalmic lens material at Omuta Works by constructing a new plant. Commercial operations are planned for the first half of 2029.

- Type: Expansion
- Announced: 2026-06-03
- Where: Omuta Works, Japan, Japan
- Starts operating: 2029
- Status: announced
- Products: high-refractive-index ophthalmic lens material (MR series)
- Sectors: [Specialty Chemicals](https://endata.com/sectors/specialty-chemicals.md)

## Companies

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

## Sources

- [jp.mitsuichemicals.com](https://jp.mitsuichemicals.com/en/release/2026/2026_0603_1/index.htm), 2026-06-03: "Mitsui Chemicals will expand its MR™ production capabilities at Omuta Works through the construction of a new plant, with commercial operations planned for the first half of 2029."

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