Beijing plans to finish building its PM2.5 monitor network across the city by the end of September, according to the official website of Beijing Municipal Environmental Protection Bureau.
Links:
[1] http://admin.indiaenvironmentportal.org.in/news/beijing-finish-pm25-network-end-sept
[2] http://admin.indiaenvironmentportal.org.in/category/newspaper/china-daily
[3] http://admin.indiaenvironmentportal.org.in/category/thesaurus/china
[4] http://admin.indiaenvironmentportal.org.in/category/thesaurus/air-pollution
[5] http://admin.indiaenvironmentportal.org.in/category/thesaurus/air-pollution-control
[6] http://admin.indiaenvironmentportal.org.in/category/thesaurus/pm-25