Top 10 most polluted Chinese cities in 2013
- By Gong Yingchun
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E-mail China.org.cn, January 15, 2014
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Langfang
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Residents wear masks for protection from hazardous smog in Langfang, north China's Hebei Province. [File photo] |
Province: Hebei
Average annual PM2.5 density: 113.8
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