ZERA Contact


Information in accordance with § 5 TMG (The German Telemedia Act):
Hauptstraße 392
53639 Königswinter

Represented by:
Horst Wächter
Rainer Otto

Tel.: + 49 (2223) 704-0
Telefax: + 49 (2223) 704-70
E-mail: info@zera.de

Entered in the Commercial Register.
Court of Registration: Siegburg HRB
Registration no.: 7073

VAT ID no. in accordance with §27 a of the Sales Tax Law: DE218515479

Sources for images and graphics:
Helmut Reinelt

Design & Production:
Werbeagentur Maas GmbH & Co. KG, Bad Honnef


Liability for content

As a service provider we are responsible for our own content on this site pursuant to § 7 para 1 TMG and in accordance with general law. Pursuant to §§ 8 bis 10 TMG, as service providers we are not responsible for monitoring any external information that is transmitted or stored, or to investigate any circumstances that could indicate the presence of  illegal activity. Obligations to remove or block the use of information under general law remain unaffected. Liability in this respect is however only possible from the date of detection of a specific breach, and upon notification of such violation, we will remove this content immediately.

Liability for links

Our site contains links to external websites of third parties over which we have no control or influence, and cannot therefore accept liability for such external content. The respective provider or operator of external sites is always responsible for the content of any linked sites, which were checked for potential legal violations at the time the link was placed on our site, and no illegal content was detected. However, it is not feasible to permanently monitor the content of the linked sites in the absence of concrete evidence of a violation. Should we detect any infringements, we will remove the relevant links immediately.


The content and works created by the site operators are subject to German copyright law. The reproduction, adaptation, distribution and any kind of exploitation outside the scope of the copyright shall require the written consent of the respective author or creator. Downloads and copies of this site are permitted exclusively for private and non-commercial use. Insofar as the content of this site is not created by the website operator, the property rights of third parties must be respected and shall be identified as such. However, please notify us if you become aware of any copyright violations. Should we detect any infringements, we will remove the relevant links immediately.

Google Analytics Disclaimer

This website uses Google Analytics, a web analytics service provided by Google, Inc. ("Google"). Google Analytics uses "cookies", which are text files placed on your computer to help the website analyse how visitors use the site. The information generated by the cookie about your use of the website (including your IP address) will be transmitted to and stored by Google on servers in the United States . Google will use this information for the purpose of evaluating your use of the website, compiling reports on website activity for website operators and providing other services relating to website activity and internet usage. Google may also transfer this information to third parties where required to do so by law, or where such third parties process the information on Google's behalf. Google will not associate your IP address with any other data held by Google. You may refuse the use of cookies by selecting the appropriate settings on your browser, however please note that if you do this you may not be able to use the full functionality of this website. By using this website, you consent to the processing of data about you by Google in the manner and for the purposes set out above.

You can prevent Google’s collection and use of data (cookies and IP address) by downloading and installing the browser plug-in available under tools.google.com/dlpage/gaoptout.

This website uses cookies. More information is available here.