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Chinese stocks closed lower Friday with the benchmark Shanghai Composite Index falling 0.34 percent at 3,371.74 points, while the Shenzhen Component Index closed 0.68 percent lower at 11,215.19 points.
Classes were canceled at about 40 schools in the Los Angeles area after poor air quality was reported, officials said.
Citing a report by the National Bureau of Economic Research in New York, from 2000 to 2006, imported products from China helped lower the prices of manufactured goods in the US by 7.6 percent, which benefits US consumers, especially middle- and low-income families, Xu said.
Cities at prefecture level and above should see the number of good-air days reach 80 percent annually and the percentage of heavily polluted days decrease by 25 percent or more from 2015 levels.
Clover said it is exploring development pathways for the S-Trimer vaccine to be made accessible to populations in China and globally, if it is proven to be safe and effective.
来源：资阳报