# Toyobo MC to invest ¥1 billion to triple RO membrane production capacity

Toyobo MC will invest 1 billion yen to install new equipment at its Iwakuni plant in Yamaguchi Prefecture, tripling production capacity of reverse osmosis membranes for seawater desalination. The expansion also prepares for future production of membranes for lithium recovery.

- Type: Expansion
- Announced: 2025-10-03
- Where: Iwakuni, Yamaguchi Prefecture, Japan
- Value: $6.70M (1.00B JPY)
- Starts operating: Q3 2026
- Status: announced
- Capacity: 3 times current production
- Products: reverse osmosis membranes, lithium recovery membranes
- Sectors: [Water Treatment Equipment](https://endata.com/sectors/water-treatment-equipment.md)

## Companies

- [Toyobo MC](https://endata.com/companies/74650.md)

## Sources

- [nikkei.com](https://www.nikkei.com/article/DGXZQOUF26CI10W5A820C2000000/), 2025-10-02: "東洋紡エムシー（大阪市）は海水淡水化に使う逆浸透膜（RO膜）を増産する。10億円を投じて工場に最新設備を導入し生産能力を現状の3倍にする。"
- [nikkei.com](https://www.nikkei.com/article/DGKKZO91699780S5A001C2TB3000/), 2025-10-02: "東洋紡エムシー（大阪市）は海水淡水化に使う逆浸透膜（RO膜）を増産する。10億円を投じて工場に最新設備を導入し生産能力を現状の3倍にする。"
- [kikai-news.net](https://kikai-news.net/2025/10/06/%e6%9d%b1%e6%b4%8b%e7%b4%a1%e3%82%a8%e3%83%a0%e3%82%b7%e3%83%bc%e3%80%81%e4%b8%ad%e7%a9%ba%e7%b3%b8%e5%9e%8bro%e8%86%9c%e3%81%ae%e8%a3%bd%e9%80%a0%e8%a8%ad%e5%82%99%e3%82%92%e5%a2%97%e5%bc%b7%e3%80%81/), 2025-10-06: "増設後の生産能力は現行比3倍となる。"
- [note.com](https://note.com/sankituushin/n/nff8b29a870b0?hl=en), 2025-10-06: "The total investment is approximately 1 billion yen, with operations scheduled to begin around the summer of 2026."

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