Maharashtra contributes 25% of the country's industrial output and is the most indebted state in the country. Industrial activity in state is concentrated in five districts: Mumbai City, Mumbai Suburban, Thane, Pune, and Nashik. Mumbai has the largest share in GSDP (21.5 per cent), both Thane and Pune districts contribute about same in the Industry sector, Pune district contributes more in the agriculture and allied activities sector, whereas Thane district contributes more in the Services sector. Nashik district shares highest in the agricultural and allied activities sector, but is far behind in the Industry and Services sectors as compared to Thane and Pune districts. Industries in Maharashtra include chemical and chemical products (17.6%), food and food products (16.1%), refined petroleum products (12.9%), machinery and equipment (8%), textiles (6.9%), basic metals (5.8%), motor vehicles (4.7%) and furniture (4.3%). Maharashtra is the manufacturing hub for some of the largest public sector industries in India, including Hindustan Petroleum Corporation, Tata Petrodyne and Oil India Ltd.