Top 10 most air polluted Chinese cities in 2013
china.org.cn / chinagate.cn by Gong Yingchun, January 15, 2014
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Tangshan
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A woman wearing a mask for protection from air pollution walks through the haze in Tangshan, north China's Hebei Province, on Feb. 17, 2013. [File photo]
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Province: Hebei
Average annual PM2.5 density: 114.2
