Industries can be classified based on ownership into Public Sector, Private Sector, Joint Sector, and Cooperative Sector. Public Sector Industries are owned and operated by the government, such as BHEL and SAIL. Private Sector Industries are owned and operated by individuals or groups (e.g., Tata Iron and Steel Co. Ltd., Reliance Industries). Joint Sector Industries are jointly run by the state and individuals or groups (e.g., Oil India Ltd.). Cooperative Sector Industries are owned and operated by the producers or suppliers of raw materials, workers, or both (e.g., Amul, sugar industries in Maharashtra).