Wikipedia
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Aerotec was a design and manufacturing company founded in Brazil in 1962 under the auspices of the Brazilian General Command for Aerospace Technology (CTA) in Sao Jose dos Campos.
Beginning in the late 1960s, the firm manufactured a two-seat trainer for the Brazilian Air Force, the Aerotec Uirapuru. A small number were also built for the civil market, and still others were exported to other Latin American countries.
By 1980, Aerotec's main business was producing components for Embraer. However, around this time, the Air Force became interested in an uprated version of the now-venerable Uirapuru. A prototype was built (designated Uirapuru II) but by the time it flew, the Air Force no longer required it. A small number were built for export.
In 1987, the firm was sold to Embraer.
The Aero Tec is also an air circulation fan produced by DL Manufacturing.