hospitality sectors; several large shopping malls and hotels were launched. As of 2010, Kolkata, with an estimated gross domestic product (GDP) by purchasing power parity of 150 billion dollars, ranked third among South Asian cities, after Mumbai and Delhi.
Kolkata is home to many industrial units operated by large public- and private-sector corporations; major sectors include steel, heavy engineering, mining, minerals, cement, pharmaceuticals, food processing, agriculture, electronics, textiles, and jute. ITC Limited, Coal India Limited, and Britannia Industries rank among the companies headquartered in the city. Kolkata hosts the headquarters of three major public-sector banks: Allahabad Bank, UCO Bank, and the United Bank of India. Adoption of the "Look East" policy by the Indian government; opening of Sikkim's Nathu La mountain pass, which is located on the border between India and China, to bi-directional international trade; and the interest shown by South-East Asian countries in expanding into Indian markets are factors that could benefit Kolkata
