The story
It was founded on June 2, 1964 by Josef Thannhuber as Hans Einhell GmbH. Hans Einhell was the uncle of Josef Thannhuber.
In the late 1960s it opened a factory in Spain. The company floated on the stock market in 1987. It is a Prime Standard traded company on Xetra (EING_p.DE).
From Wikipedia’s article on Einhell, shared under CC BY-SA 4.0.5