【Established Date】The friendly exchange and cooperation relations between Tianjin and Cologne were oﬃcially established on September 12, 2007.
【City Characteristics】Cologne is the fourth largest city in Germany and once a leading member in the Hanseatic League. Today's Cologne is one of the largest inland ports in Germany. The city is one of the ﬁnancial hubs in Germany, with various industries ranging from metallurgy, machinery, oil reﬁning, textiles, to military, chemical, pharmaceutical, and food industries. As one of Germany's major producers of lignite, Cologne is also home to large thermal power plants.