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The members of SOPIB are the main producers of sulphate of potash. The Board of Directors is in charge of strategy, while the Agronomic Committee proposes research programmes, communications topics and budgets.
 
Compass Minerals
Compass MineralsCompass Minerals is North America’s only producer of Sulfate of Potash (SOP), an excellent high-potassium plant nutrition product. SOP has the added benefits of providing sulfate sulfur with virtually no chloride and a low salt index. Compass Minerals offers a complete suite of plant nutrition products and technologies help growers increase yield and improve the quality of their high-value crops.

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K+S KALI GmbH

K+S Kali GmbH K+S KALI GmbH is the leading supplier of potassium sulphate and magnesium and the 4th largest producer of potassium worldwide. With production locations all over Europe and distribution locations all over the world, K+S KALI GmbH is able to provide its clients with a wide variety of products for specific customer needs.

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Tessenderlo Chemie
Tessenderlo ChemieTessenderlo Chemie is the second largest producer of potassium sulphate worldwide and exports its products to more than 80 countries.


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SQM
SQMLocated close to the Atacama Salt Desert, SQM has exclusive access to the greatest potassium concentrations ever known and to significant sulphate accumulations. Especially customers in South America benefit from this resource.


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