Home / Standards / GB/T 16661-2018 GB/T 16661-2018 Active Cerium carbonate 碳酸铈 Standard Type GBT ICS 77.120.99 CCS H65 Status 现行 Issue Date 2018-06-07 Implementation 2019-03-01 Responsible Dept 国家标准委 Drafting Unit N/A