Ratingen, Germany?and Wuxi's Huishan district signed to become sister citieson May 14, 2007.

Ratingen, founded in 1276, is located in the Ruhr Industrial Area in the north of the Nordrhein-Westfalen of German with an area of 89 square kilometers and a population of 92,000.

Ratingen, a famous city for leisure in German and an industrial base, is called a "green lung" of the Ruhr Industrial Area owning to its historical architectures and beautiful surroundings. Some International Enterprises like the ABB, SAP, Vodafone, Esprit were attracted by its beautiful environment.