John Deere is a brand name of Deere & Company, an American corporation specializing in the manufacture of agricultural, construction and forestry machinery, diesel engines, transmission systems (axles, transmission, gearbox) used in heavy equipment and lawn care equipment. The company was founded in 1804 and is one of the oldest engine company in the world.

Doosan is one of the leading corporations in Korea specializing in the manufacture and distribution of engines, construction equipment, etc.The Group was founded in 1896 in Baeogai (now Jongno 4-ga, Seoul) and still keeps growing.

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Cummins is an American corporation specializing in the design, manufacture and distribution of engine products, filters and power generation. The company was founded by William Glanton Irwin and Clessie Cummins in 1919 in Columbus, Indiana.