Home / Standards / GB/T 24243-2009 GB/T 24243-2009 Active Chromium ores - Increment sampling 铬矿石 采取份样 Standard Type GBT ICS 73.060.30 CCS D33 Status 现行 Issue Date 2009-07-15 Implementation 2010-04-01 Responsible Dept 中国钢铁工业协会 Drafting Unit 中国钢铁工业协会