Home / Standards / GB/T 20168-2017 GB/T 20168-2017 Active Rapidly-quenched neodymium iron boron permanent magnetic powder 快淬钕铁硼永磁粉 Standard Type GBT ICS 77.120.99 CCS H65 Status 现行 Issue Date 2017-10-14 Implementation 2018-05-01 Responsible Dept 国家标准委 Drafting Unit N/A