# Saudi Arabia opens $266 million RO membrane plant in Dammam

Saudi Arabia opened the Middle East's largest reverse osmosis membrane manufacturing facility in Dammam's Third Industrial City. The plant, a joint venture between Abunayyan Holding and Toray Industries, represents an investment of approximately $266 million and has an annual capacity of about 300,000 RO membranes.

- Type: New facility
- Announced: 2025-11-13
- Where: Dammam's Third Industrial City, Saudi Arabia
- Value: $266.0M
- Jobs: 175
- Starts operating: 13 Nov 2025
- Status: completed
- Capacity: 300,000 RO membranes per year
- Products: reverse osmosis membranes
- Sectors: [Water Treatment Equipment](https://endata.com/sectors/water-treatment-equipment.md)

## Companies

- [Toray Industries](https://endata.com/companies/4565.md) (partner)
- [Abunayyan Holding](https://endata.com/companies/45374.md) (partner)

## Sources

- [smartwatermagazine.com](https://smartwatermagazine.com/news/smart-water-magazine/saudi-arabia-opens-266-million-ro-membrane-plant), 2025-11-13: "The plant, located in Dammam's Third Industrial City, represents an investment of approximately 1 billion Saudi riyals ($266 million)"

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