Thai Nguyen was named a first-class city because it plays a role in itswider region rather than just its own province, but still comes underthe supervision of its province.
Thai Nguyen, 80km north of Hanoi , covers an area of almost 19,000ha and has population of more than 330,000.
Industry and construction account for about 48 percent of the city'seconomic structure while services and agriculture make up 47.4 percentand 4.6 percent, respectively.
Dung said at the ceremony he believed the city would bring into full play its good history and achievements.
"I believe it will spend more effort overcoming challenges to become amodel for regional cities, which is green, clean, beautiful, modern, buttraditional, wealthy and civilised, as expressed by Uncle Ho when hevisited here," Dung said.
He told the provincial authorities to focus on developing human resources, services, industry, transport and agriculture.
Thai Nguyen also needed to speed up economic growth, based on theproduction and service industries that it influenced, andhigh-technology industries to improve the quality and competitiveness ofthe economy and turn it into a modern economically structured city, hesaid.
Thai Nguyen City was established in 1962 onthe basis of Thai Nguyen Town and the steel manufacturing areain the southern part of Thai Nguyen province.
In 2002, itbecame a second-class city, which plays a central role in thedevelopment of a province and must have a population of at least 25,000.
Vietnam now has two special cities, Hanoi and HCMCity , three first-class cities under the supervision of the State,seven first-class cities under the supervision of their provinces, 12second-class cities and 32 third-class cities which have populations ofat least 10,000./.