Mandsaur district is the sole producer in India of white- and red-coloured slate, used in the district's 110 slate pencil factories. There is a cement factory in . Apart from this, the region lacks mineral resources. The region's industries mainly produce consumer goods—but there are now many centres of large- and medium-scale industries, including Indore, Nagda and Ujjain. Indore has a large-scale factory that produces diesel engines. Pithampur, an industrial town 25 km from Indore, is known as the Detroit of India for its heavy concentration of automotive industry. Indore is recognised as the commercial capital of Madhya Pradesh, and is the main centre for trade in textiles and agro-based products. It has one of the six Indian Institutes of Management and one of sixteen Indian Institute of Technology.