Excavator dragging "black tail"? Beijing precisely cracks down on excessive emissions from non-road mobile machinery. Mobile sources are one of the main sources of fine particulate matter (PM2.5) emissions in Beijing at this stage.

Beijing Municipal Department of Ecology and Environment has developed and launched "Jinghuanbao" The construction unit handles the entry and exit registration of non- road mobile machinery, and dynamically records the use of it. It has carried out an inspection of all machinery on the construction site, all of which meet the requirements of China.