Home / Standards / GB/T 41760-2022 GB/T 41760-2022 Active Test method for spontaneous polarization of tourmaline 电气石自发极化性能测试方法 Standard Type GBT ICS 73.080 CCS D59 Status 现行 Issue Date 2022-10-14 Implementation 2023-02-01 Responsible Dept 中国建筑材料联合会 Drafting Unit N/A