Formation of a company for manufacturing brass fittings for furniture and doors by the brothers Gustav and Albert Kuhlmann in Grüne near Iserlohn
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.
Registration of the brand name “EDI” by the company Erich Dieckmann builder’s hardware
Conversion of manufacturing from brass to aluminium alloy due to wartime management at the beginning of the Second World War.
Restart of manufacturing, from now on only door mountings and window fittings and handles and coat racks from aluminium
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First trade fair booth at household and iron goods trade fair in Cologne.
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.
Successful setup of new ranges of products for supplying DIY stores
Erection of plant II also in Iserlohn/Grüne.
Rainer Dieckmann joins the company and in 1996, after the withdrawal of Rudolf Dieckmann, takes over the management.
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.