Komatsu Ltd. is a Japanese multinational corporation that manufactures construction, mining, forestry, and military equipment, as well as diesel engines and industrial equipment like press machines, lasers and thermoelectric generators. Its headquarters are in Minato, Tokyo, Japan. The corporation was named after the city of Komatsu, Ishikawa, where the company was founded in 1921. Worldwide, the Komatsu Group consists of Komatsu Ltd. and 258 other companies (215 consolidated subsidiaries and 42 companies accounted for by the equity method). Komatsu is the world's second largest manufacturer of construction equipment and mining equipment after Caterpillar Inc.