30 years experience

Arising from the Schulte-Stemmerk Group, a manufacturer -Dichtsysteme GmbH, Duisburg has specialized since its foundation in the sealing of windows and facades. Today our customers profit from experience gained 30 years of innovative development in window and facade construction. Numerous patents underline the innovation spirit at . Consideration is always given to what is important and what is to the advantage of the customer, with the most favorable product costs – that is our uppermost maxim.

The most recent sector, insect protection, has already been in existence for more than 10 years. In the meantime, has also become a byword wherever it involves innovation, design and reliability. Increasingly improved and more modern manufacturing methods also allow the realization of the most difficult shapes.

Foundation of the company -Dichtsysteme GmbH as an independent business
Expansion of the logistics centres in southern Germany
Move to the new headquarters in Weidenweg, Duisburg
   with approximately 5,000 square meters
Expansion by the logistics centre “Hermsdorfer Kreuz”
   in East Germany
DQS certification according to EN ISO 9001
Expansion by the logistics centre “Hermsdorfer Kreuz”
in East Germany
Trade fair debut at the fensterbau.frontale, Nurenberg
Market development in Lithuania, with joint venture
Start of series production of insect guard systems
Expansion into Poland with the establishment of a subsidiary
Centralisation of logistics and expansion of the headquarters
in Duisburg
Establishment of DDS Immobilien GmbH, a 100% subsidiary
Move to the new headquarters in Moers on
   approximately 15,000 square meters
Introduction of the order software “SAM” for all customers
Trade fair debut at the BAU 2013, Munich
Relaunch of product department “Insect Sun Sight Pollen
Admission of cutting-service DÄMMFLEX
-Family Day on 30th Company anniversary
The new online catalogue launch at www.deflex-online.de