French producers Bardinet are behind the Ron Pujol brand nowadays, though the rum has a heritage stretching back to 1818.
Research on the internet has been difficult – the official Ron Pujol website is in Spanish (it’s actually Catalan you ignoramous) and resists any translation.
It would seem that this is perhaps the Spanish version of Negrita? For those not familiar with the brand, Ron Negrita is another of Bardinet’s offerings. It is a mixture of agricole and molasses based r(h)um and is popular and easy to find in both Spain and France. Ron Pujol offers more of a “ron” experience than a “rhum”.