Friendly exchanges: Zhengzhou has set up friendly sister cities relationship with Urawa of Japan, and Richmond of USA, Schwerin of Gemany, Joinville of Brazil, Cluj-Napoca of Romania, Chinju of Rok, Samara of Russia, Irbid of Jordan and Mariental of Namibia.
友好交往:郑州已于日本琦玉市、美国里士满市、德国什未林市、巴西诺因维来市、罗马尼亚克鲁日·那波卡市、韩国晋州、俄罗斯萨马拉、约旦依尔比德、纳米比亚马林塔尔等城市建立了友好城市关系。