Company history

Bankruptcy of the company Gustav und Albert Kuhlmann. Production and premises with a total of 14 employees are taken over by the merchant Erich Dieckmann from Dortmund.

Conversion of manufacturing from brass to aluminium alloy due to wartime management at the beginning of the Second World War.

First building expansions of production and office space.

Formation of the sister company “NORMBAU Erich Dieckmann GmbH” based in Kehl (later Renchen) by Erich Dieckmann and his son Dieter Dieckmann. (In 1991, this company was sold to the British company “Newman Tonks” – now “Ingersol-Rand” – by Dieter Dieckmann.)

The son Rudolf Dieckmann joins the company as second managing director and in 1972 replaces the founder Erich Dieckmann as managing director.

edi is the first to launch burglary safety shields on the market.

Investment in the French company “FFA-Le Fer Forge d’Alsace” (until 1997).

The new company strategy aims at a return to the core competence and focusses at the expansion of the range of the products in fitting/mounting. Other product ranges are abandoned or sold.

Further production halls are built at the Grüne site.