Home / Standards / GB 5817-1986 GB 5817-1986 Abolished Classification of hazard levels due to exposure to industrial dust 生产性粉尘作业危害程度分级 Standard Type GB ICS 13.040.30 CCS C70 Status 废止 Issue Date 1986-01-21 Implementation 1986-11-01 Responsible Dept 应急管理部 Drafting Unit N/A