Müller was a producer of large four-wheel drive tractors and construction equipment in Brazil. Established in 1956, the company started manufacturing farm tractors in the mid-1970s, leveraging their expertise from compactors. The product line of Müller tractors grew, featuring increasingly larger models until the mid-1980s. However, in the 1990s, heightened competition from international brands led to a downturn for Müller, resulting in the cessation of production in 2002. Proton Primus, another Brazilian company, subsequently acquired the design rights to Müller’s machinery.