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On which workshops was Arado built?
Short answer
Arado Flugzeugwerke was built on the Warnemünde plant that the firm Flugzeugbau Friedrichshafen had there. Heinrich Lübbe bought the plant in 1921 and the whole was absorbed into Arado Handelsgesellschaft, founded by the industrialist Hugo Stinnes Jr.. The company was liquidated in 1945.

From Flugzeugbau Friedrichshafen to Arado
Arado Flugzeugwerke was a German aircraft manufacturer originally established as the Warnemünde plant of the firm Flugzeugbau Friedrichshafen. That facility changed hands in 1921, when it was bought by Heinrich Lübbe. The establishment was later absorbed into the Arado Handelsgesellschaft, a company founded by the industrialist Hugo Stinnes Jr..
A more precise name and new management
The firm was renamed, more specifically and accurately, Arado Flugzeugwerke GmbH, and came under the direction of Erich Serno and Felix Wagenführ, the latter a former IdFlieg officer during the First World War.
Early aircraft and the firm's end
The Arado S I was a biplane trainer built in Germany in 1925. The first of its three prototypes was powered by a Bristol Lucifer radial engine, while the other two aircraft, designated Arado S.Ia, received the Siemens-Halske Sh 12. The company's history ended in 1945, when it was liquidated and dismantled.
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