Home / Standards / MT/T 870-2000 MT/T 870-2000 Active 煤矿用防爆激光指向仪 Standard Type MT ICS N/A CCS N/A Status Active Issue Date 2000-12-08 Implementation 2001-05-01 Centralized Committee 国家矿山安全监察局 Issuing Authority 国家矿山安全监察局