Spirulinas have always been harvested and dried for nutritional purposes thanks to their richness in essential amino acids, vitamins (in particular B group) and minerals.
https://macrigi.co.uk/product/spirulina-maxima-algae-100/
seen from Russia

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seen from United States

seen from China
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seen from United States

seen from United States
seen from China
seen from Brazil

seen from Singapore
seen from Italy
seen from China
seen from United States
seen from Italy

seen from United States
seen from Germany

seen from Russia
seen from United Kingdom
seen from China
Spirulinas have always been harvested and dried for nutritional purposes thanks to their richness in essential amino acids, vitamins (in particular B group) and minerals.
https://macrigi.co.uk/product/spirulina-maxima-algae-100/