Responsible according to § 5 TMG (this information is required under German law):

Theis Consult GmbH

Oppenhoffallee 9-15
D - 52066 Aachen

Tel.: +49-241-60523-88
Fax.: +49 (0)241 46368007

Managing Director (CEO):

Dipl.-Ing. Christian Roszak

Entry in the commercial trade register:

Register court: District court Aachen
Register number: HRB 14296

Sales tax ID according to § 27a sales tax law:

UST ID DE255535825

Legal disclaimer:

We check and update the information provided on our websites continuously. Nevertheless, an amendment or falsification of the data cannot be ruled out completely. Hence, no liability or guarantee regarding the actuality, correctness and completeness of the provided information can be assumed. The same applies to websites which are referred to via hyperlinks. aixzellent is not responsible for the contents of websites which are accessed through such links.

Copyright protection:

Both content and design of the aixzellent webpages are protected by copyright law. Any duplication, editing or utilisation of contents, particularly of texts, their components and pictorial material, requires requires the prior explicit written consent of aixzellent.

Gender-neutral formulation:

For the sake of a simplified language and a better readability the naming of different genders is renounced. However, we clearly distance ourselves from gender-specific discrimination, including in linguistic contexts, and would therefore like to point out that the predominant use of the male form should be explicitly understood as gender-independent.


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