【Established Date】Tianjin and Philadelphia, the U.S., formally established friendship-city relations on December 6, 1979.

【City Characteristics】Located on the east coast of the USA, Philadelphia is the largest city in the state of Pennsylvania and the fifth-largest city in the country after New York, Los Angeles, Chicago, and Houston.

【Cooperation Fields】Philadelphia serves as a center for oil refining, shipbuilding, and steelmaking on the east coast of America. Its industrial sectors also encompass chemistry, pharmacy, electronics, machinery, locomotives, and automobiles. Moreover, it boasts one of the largest estuary harbors in the world.