# Garratt-Callahan Company

- Headquarters: United States


## Customers, suppliers and deals

- [BioLargo Inc.](https://endata.com/companies/42353.md): partner, 2×, latest 2021-02-02

## Announcements (2)

- 2021-02-02: [BioLargo and Garratt-Callahan to co-develop wastewater treatment product](https://endata.com/announcements/55424-biolargo-and-garratt-callahan-to-co-develop-wastewater-treatment-product) (Partnership · United States)
- 2021-02-02: [BioLargo and Garratt-Callahan team up for wastewater treatment product development](https://endata.com/announcements/55392-biolargo-and-garratt-callahan-team-up-for-wastewater-treatment-product) (Partnership · United States)

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