Defence Research and Development Organisation, commonly known as DRDO was established in India in 1958.
Bharat Dynamics Limited (1970), Bharat Earth Movers Limited (1964), Hindustan Aeronautics Limited (1964), and Bharat Electronics Limited (1954) are some of the public sector industries. These units are partially owned by the government. They help in manufacturing ships, aircraft, bulldozers, submarines, rockets etc.