Home / Standards / GB/T 17951-2022 GB/T 17951-2022 Active Specification for magnetically hard materials 硬磁材料一般技术条件 Standard Type GBT ICS 29.030 CCS K14 Status 现行 Issue Date 2022-03-09 Implementation 2022-10-01 Responsible Dept 中国电器工业协会 Drafting Unit N/A