Home / Standards / GB/T 33804-2017 GB/T 33804-2017 Abolished Potassium humate for agricultural use 农业用腐殖酸钾 Standard Type GBT ICS 65.080 CCS G21 Status 废止 Issue Date 2017-05-31 Implementation 2017-12-01 Responsible Dept 中国石油和化学工业联合会 Drafting Unit N/A