Explanation:

Kanpur, also known as the 'Leather city' of the world, is famous for its tanneries and top-quality leather products.
Tamil Nadu is the largest leather producing state in India. It accounts for 40 per cent of the country's leather production. Chennai, Ambur, Ranipet, Vaniyambadi, Vellore, Trichy, Dindigul and Erode are major leather producing centres in Tamil Nadu