www.chinadaily.com.cn/a/201712/20/...3e78a31008cf16da279f.html
BEIJING - China is moving to tighten control over pollutant emissions from new motor vehicles.
A recently revised policy demands stricter emission limits to be gradually placed on carbon monoxide, total hydrocarbons, nitrogen oxides and particulate matter produced by new motor vehicles, according to a Ministry of Environmental Protection statement Wednesday.
The ministry will make unified national emission standards for new vehicles, with local authorities encouraged to adopt the standards ahead of schedule. Priority of regulation will be put on heavy-duty diesel vehicles.