Home / Standards / GB/T 2969-2008 GB/T 2969-2008 Abolished Samarium oxide 氧化钐 Standard Type GBT ICS 77.120.99 CCS H65 Status 废止 Issue Date 2008-03-31 Implementation 2008-09-01 Responsible Dept 国家发展改革委 Drafting Unit 国家发展改革委