As the economic center in Xinjiang, Ürümqi has expanded its urban area since the 1990s. The CBDs in the city increased rapidly all around the major districts. Despite the old city areas being primarily in the south, the development in the north part began since the late 1980s. The completion of the new office tower for Ürümqi Municipal Government in 2003 at Nanhu Square () in Nanhu Road marked a shift of the city center to the north. Lacking a subway, the city commenced the construction of viaducts for Outer Ring Road () since 2003, which considerably facilitates transport. Youhao Road () and surrounding neighborhood, is the commercial center for business, shopping and amusement. Youhao Group (), the namesake local enterprise, owns a major market share of retails. Maison Mode Urumqi (), open since 2008, became one of the few notable department stores for luxury merchandise in the city. The Ürümqi Economic and Technological Development Zone (UETD) located in the northern Toutunhe District, has been a leading base for steel, machinery manufacturing, biochemistry and other industrial innovations.