Descriptions :

Humic acids are a principal component of humic substances, which are the major organic constituents of soil (humus), peat and coal. It is also a major organic constituent of many upland streams, dystrophic lakes, and ocean water.It is produced by bio degradation of dead organic matter. It is not a single acid; rather, it is a complex mixture of many different acids .

Not only in China ,but also in North of America , Europe or some other place have many. 
Here we need mention is North of China ones are the most affordable one with great quality.​

Specifications :

​
Appearance:Black                           

Humic acid (dry basis):65-75% 

Fulvic acid :5-10%

K2O:8-12% min                                           

Solubility :98-100% min  
Moisture:15% max                      

PH:8-10                                  

Size:2-4 mm

Application :

• Soil Application: 10-15kg/ha
• Irrigation: 10-15kg/ha
• Foliar Application: 8-10kg/ha with the dilution rate of 1:500-600

Benefits & Funcation :

• Increases organic matter of soil
• Improves potash fertilizer utilization
• Increase the release of potassium
• Improves stress tolerance of crops
• Enhances water holding capacity of soil
• Reduces soil erosion and improves workability of soil