Home / Standards / GB/T 19395-2013 GB/T 19395-2013 Active Praseodymium metal 金属镨 Standard Type GBT ICS 77.120.99 CCS H65 Status 现行 Issue Date 2013-12-31 Implementation 2014-10-01 Responsible Dept 国家标准委 Drafting Unit N/A