 However, in the 2009 rankings of ease to start and operate a business, among the 17 Indian cities selected, Kochi was rated as the second most difficult city to start business and was ranked 16th, above Kolkata.As in most of Kerala, remittances from non-resident Indians (NRI)s is a major source of income.Eloor, situated north of the city-centre, is the largest industrial belt in Kerala, with more than 250 factories manufacturing a range of products including chemical and petrochemical products, pesticides, rare earth elements, rubber processing chemicals, fertilisers, zinc and chromium compounds, and leather products.