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Thứ Năm, 19 tháng 4, 2018

China fights big smog with big air purifier

China fights big smog with big air purifier
China has a found a novel way to tackle its massive air pollution problem: Putting up a giant air purifier the size of an industrial smokestack in the middle of a smog-plagued city. Instead of pumping out billows of black smoke like the chimneys rising from factories in the northern province of Shaanxi, the ...

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