The document provides background information on the Indian aluminum industry. It discusses how aluminum was discovered in 1886 and how the Aluminum Corporation of India was founded in 1937 as the first attempt to manufacture aluminum in India. The Indian aluminum industry is represented by the Aluminum Association of India. The primary market structure of the Indian aluminum industry is oligopolistic, dominated by three major producers - Hindalco, Vedanta Aluminum, and Nalco. The secondary aluminum sector is larger and more fragmented with around 3,500 smaller producers. The document goes on to provide details on the aluminum extraction process, types of primary and secondary aluminum products, and the market structure of the aluminum extrusion industry in India.