Detroit is the most populous city in the U.S. state of Michigan. It is best known as the centre of the U.S. automobile industry, and the ‘Big Three’ auto manufacturers General Motors, Ford, and Chrysler are headquartered in this city. Antwerp is a city in Belgium. It is best known for its diamond industry and trade. Tokyo is the capital of Japan. Mitsubishi Engineering Company headquartered in Tokyo is one of the core companies of automotive components, hydraulic equipment and ships. Harbin is the largest city in the north–eastern region of China. It serves as an important industrial base of steel industries.