About Us
1984
Foundation of the company
1985
Development and production of gas filling systems
1986
Move to the new site Deipenbrook
1990
Development and production of noise silencers/ THEILencer ®
1994
Development and production of heat exchangers
1996
Production of pressure vessels in compliance with the German Pressure Vessel Code
1997
Certified company for providing training/ apprenticeship
2002
Production of hydrogen fuelling stations for vehicles
2007
Production of a hydrogen filling system with a filling pressure of 700 bar
2008
Enlargement of the workshop area/ construction of a new hall
2009
Extension of the office area / new design and drafting office
25th anniversary of Theisen GmbH
Change of company’s legal form to Theisen GmbH & Co. KG
2010
Expansion into new production facility with aprox. 1.000m² at Schützenstrasse
