Photo credits

Photo credits

If you have any questions about the terms of use of pictures, illustrations or photos, please contact us:

TÜV Rheinland AG
Am Grauen Stein
51105 Köln

Tel. +49 (0) 221 / 806 – 0
Fax +49 (0) 221 / 806 – 114
E-Mail: blog[at]

According to the terms of use you will find here the picture credits of the purchased pictures, illustrations and photos:

208077409arda savasciogullariShutterstock

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