The Tianjin Tower, or Jin Tower, or Tianjin World Financial Center is a modern supertall skyscraper located in the Heping Business District of Tianjin, China, on the banks of the Hai River. The mixed-use tower is 336.9 metres (1,105 ft) tall and contains 74 floors above ground and 4 below, with an observation deck at 305.2 metres (1,001 ft). The area of the glass unitized curtain wall, manufactured by Jangho Group, is 215,000m². It is notable as the first office building in Tianjin to be equipped with double decker elevators. The skyscraper was topped-out on January 14, 2010 and opened in 2011. The building is owned by Financial Street Holding, with Jones Lang LaSalle as joint sales and leasing agents.