Hamburg, Hamburg, Germany
Cluj-Napoca, Cluj County, Romania
Berlin, Berlin, Germany
Oldenburg, Niedersachsen, Germany
Shanghai, Shanghai Municipality, China
Freiburg im Breisgau, Baden-Wuerttemberg, Germany
Shanghai, China
Bonn, North Rhine-Westphalia, Germany
Braunschweig, Niedersachsen, Germany
Braunschweig, Lower Saxony, Germany
Mandelbachtal, Saarland, Germany
