Home / Standards / GB/T 13558-2019 GB/T 13558-2019 Active Dysprosium oxide 氧化镝 Standard Type GBT ICS 77.120.99 CCS H65 Status 现行 Issue Date 2019-08-30 Implementation 2020-07-01 Responsible Dept 国家标准委 Drafting Unit N/A