Aerospace Industry - In an aerospace industry mechanical engineers are used to doing research, design, manufacture, operate, and maintain the aircraft.
Automotive Industry - In automotive industry mechanical engineers are used to do designing, manufacturing distributes, and perform marketing of motor vehicles.
Chemical Industry - In the chemical industry, they cover the oil companies, chemical manufactures, and the business to build new chemical plants or to develop new process technologies.
Construction Industry - In this field of industry the role of a mechanical engineer is to design and build the infrastructure and buildings and its services like heating and ventilation.
Defense Industry- In the defense industry, they provide the equipment and provide support and services to the armed forces.
Electronics Industry - In this field of industry the role of mechanical engineers is to design and manufacture components and complete equipment for sectors from automotive and the military.