Nauterra, CONSERVAS CALVO, is one of the largest spanish canned tuna companies. Our main brand is CALVO, and we have three facilities in Spain, El Salvador and Brasil. We are specialised in tuna products with a really large assortment to fullfil all our clients requirement. We have the most important certification: BRC, IFS, ISO, MSC, FOS, FSC... We are able to produce private labels and we are flexible to adapt our productions to our client´s needs.