External supervision  
  Sound insulation compendium  





Quality Assurance Association (registered society)
Heinestr. 169 
D-70597 Stuttgart

Phone: +49 711 - 9 76 58-0
Fax: +49 711 - 9 76 58-30
Registered in the association register local court of Stuttgart VR4410.

Represent by the director Dr. Volker Schmid.


Lang Kommunikation
Jürgen Lang
Krakauer Weg 45
D-53859 Niederkassel
Phone: +49 2208 / 91 02 07
Fax: +49 2208 / 7 19 78


Data protection/Counting of visits to the web-page

The website uses Google analytics, a web analysis service provided by Google Inc. (“Google”)
Google Analytics uses cookies which are text fields saved on your computer and which allow an analysis of the website’s performance.  The available information in respect of the use of the website (including your IP address) will be transferred to a Google server in the USA and stored accordingly.  Google will use the information to analyse the use of the website, to provide reports about the website’s activities to their providers and to offer additional services relating to the use of the website and the internet.  Google may also pass on the information to third parties if required by law or requested by third parties who are processing the data on behalf of Google.  Under no circumstances will Google link your IP address with other Google data.  The installation of the cookies can be prohibited by adjusting your browser software.  We need to advise that in this instance you may not be able to use all functions of the website.  By using this website you declare your agreement to the above terms and conditions.


You can contradict the collection and use of your IP address with Google Analytics. For more information, see We point out that on this site Google Analytics has been enhanced to to the code "gat._anonymizeIp ();". It ensure the collection of anonymous IP addresses.