Home / Standards / GB/T 24532-2009 GB/T 24532-2009 Active Micron carbonyl iron powder 微米级羰基铁粉 Standard Type GBT ICS 77.160 CCS H54 Status 现行 Issue Date 2009-10-30 Implementation 2010-05-01 Responsible Dept 中国钢铁工业协会 Drafting Unit 中国钢铁工业协会