The 37th International trade fair, which is underway in the national capital, opened for general public. The first four days of the 14-day event were dedicated to business visitors. Visitors were seen strolling around to see the products on display at the international fair. As many as 3,000 exhibitors and participants from almost 22 countries have put up their pavilions at the annual fair, organised by the India Trade Promotion Organisation.The 14-day event is themed on Prime Minister Narendra Modi's 'Start-up, Standup India' project. IITF is the largest integrated trade fair with business to business and business to consumer components. It has emerged as the largest consumer goods fair in the Indian sub-continent. The fair will conclude on November 27.