Home / Standards / GB/T 45458-2025 GB/T 45458-2025 Active Method for determination of trace elements in attapulgite 凹凸棒石微量元素测定方法 Standard Type GBT ICS 73.080 CCS Q69 Status 现行 Issue Date 2025-03-28 Implementation 2025-10-01 Responsible Dept 中国建筑材料联合会 Drafting Unit N/A