Home / Standards / MT 300.3-1992 MT 300.3-1992 Active 蒸汽机车用盘江矿务局煤技术条件 Standard Type MT30 ICS N/A CCS N/A Status Active Issue Date 1992-05-07 Implementation 1992-12-01 Centralized Committee 国家矿山安全监察局 Issuing Authority 国家矿山安全监察局