West Orange, the United States and Wuxi's Xishan district signed to become sister cities on August 1, 2011.

West Orange, New Jersey became a sister city with the Wuxi Xishan District on July 29, 2010. West Orange, where the famous inventor Edison lived and worked for over 40 years, is located in the northeast part of New Jersey and is about 6 kilometers away from the Newark Airport. The major industry in West Orange is light industry including electric appliances and batteries. West Orange is a city honored the title of garden city with an integration of high-tech and biological medication, tourism and leisure. The population of West Orange is about 50,000.