Supplementary Provisions on the Evaluation of Urban Air Quality Affected by Sand Dust Weather. Country/Territory China Document type Regulation Date 2016 Source FAO, FAOLEX Subject Air & atmosphere Keyword Pollution control Monitoring Emissions Environmental audit Authorization/permit Geographical area Asia, Asia and the Pacific, East Asian Seas, Eastern Asia, North Pacific, North-West Pacific Abstract The purpose of these Supplementary Provisions is to objectively evaluate and reflect the effectiveness of air pollution control. Full text Chinese Website big5.mep.gov.cn