In recent years, Mexico has had an spectacular growth in the production of gray iron pieces as well as nodular iron, particularly for the automotive sector. In both cases, Minerales de Avino has developed diverse additive systems to apply in the sand casting processes. Our products offer the advantage of having in a single article a full and balanced system of additives that include the mixture of the best properties in calcium bentonites, sodium bentonites, sea coal and other components that provide top performance at low and high temperatures.