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Smoke is discharged from chimneys at a factory in heavy smog in Taiyuan city, north China's Shanxi province, 6 January 2017. China's top environment Stock Photo - Alamy
World's largest smog-sucking vacuum cleaner could rid cities of pollution
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Tucano Urbano MASK TOP SMOG -
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Top 10 cities with worst smog in China[1]- Chinadaily.com.cn
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Top Smog - Home | Facebook
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