National Aluminium Co Ltd mines, produces, and sells aluminum and alumina-based products in two segments: aluminum and chemicals. The company controls all stages of the aluminum process. The firm mines bauxite and refines it into alumina, then smelts most of the alumina into aluminum. The aluminum segment, which generates the majority of revenue, sells aluminum-based products. The chemicals segment sells calcinated alumina and alumina hydrate. The firm also owns and operates multiple power plants throughout India. The majority of National Aluminum's revenue comes from India.