Bolinder-Munktell (BM) was a tractor and machines manufacturer founded in Eskilstuna, Sweden in 1932 through the merger of the mechanical companies Bolinder and Munktell. In 1950 BM was bought by AB Volvo. In 1973 the company changed its name to Volvo BM AB and then in 1995 to Volvo Construction Equipment AB. The product range has changed with the times. Up to the beginning of the 20th century agricultural machinery, such as threshers were an important product. Tractor production commenced in 1913, with type 30-40. Tractors were the main product up to the 1970s.