Home / Standards / JB 6953-1993 JB 6953-1993 Abolished 铸造冲天护烟尘排放标准 Standard Type JB69 ICS N/A CCS N/A Status Abolished Issue Date 1993-07-27 Implementation 1994-07-01 Centralized Committee 机械工业部 Issuing Authority 机械工业部