S. Korea aims to cut ultrafine dust by 30% until 2032 stocking 0 8 2022.12.28 08:46 https://youtu.be/0WgUu9_kTa4 + 0 환경부 "2032년까지 초미세먼지 18㎍/㎥→12㎍/㎥ 감축" South Korea aims to cut annual average levels of ultrafine dust particles ...