Home / Standards / GB/T 28657-2012 GB/T 28657-2012 Active Potassium dichromate for industrial use 工业重铬酸钾 Standard Type GBT ICS 71.060.50 CCS G12 Status 现行 Issue Date 2012-09-03 Implementation 2013-06-01 Responsible Dept 中国石油和化学工业联合会 Drafting Unit N/A