# Huber's Fire Retardant Additives expands capacity at Martinswerk plant in Germany

Huber Engineered Materials' Fire Retardant Additives business unit is investing to increase production capacity for Martinal LEO fine precipitated alumina trihydrate at its Martinswerk Plant in Bergheim, Germany, by 20%.

- Type: Expansion
- Announced: 2026-05-15
- Where: Bergheim, Germany, Germany
- Starts operating: Q3 2019
- Status: announced
- Capacity: 20% increase in production capacity for Martinal LEO grades
- Products: Martinal LEO fine precipitated alumina trihydrate fire retardant additives
- Sectors: [Specialty Chemicals](https://endata.com/sectors/specialty-chemicals.md)

## Companies

- [J.M. Huber](https://endata.com/companies/11982.md)

## Sources

- [lucintel.com](https://www.lucintel.com/news/hubers-fire-retardant-additives-business-expands-capacity.aspx), 2026-05-15: "This substantial investment will increase our production capacity for the high quality Martinal LEO grades by an additional 20 percent and represents the single largest investment made over the last 40 years at Martinswerk."

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