Home / Standards / GB/T 34490-2017 GB/T 34490-2017 Active Recycled sintered neodymium iron boron permanent magnets 再生烧结钕铁硼永磁材料 Standard Type GBT ICS 77.150.99 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