Summary | Controlling air pollution has become a top priority
for Baoding, Hebei province, after it was listed as the
country's most polluted of 74 major cities in China for five
straight months.
for Baoding, Hebei province, after it was listed as the
country's most polluted of 74 major cities in China for five
straight months.
chinadaily.com.cn | 28 May 2015