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Beijing's birthrate last year was 8.24 per 1,000, compared with 9.06 in 2017, the Beijing Bureau of Statistics said on Wednesday.

Because ventilators are complex machines, using more than 1,500 parts from more than a dozen countries, the manufacturers say they will be limited in part by the availability of parts.

Before delivering the 90-seat aircraft to the three airlines, COMAC made full preparations for follow-up operations in terms of staff training, aviation material arrangement and support for maintenance, repair and intime monitoring, Zhang said.

Beijing and surrounding areas reported better air quality in the first month of 2018 as major air pollutants plummeted, the Ministry of Environmental Protection said in a statement Monday.

Beijing Benz Automotive will recall 533 GLA vehicles manufactured between Oct 25, 2016 and Dec 9, 2016, according to the General Administration of Quality Supervision, Inspection and Quarantine.