- Organic Matter ≥ 70%
- Humic Acid ≥ 60%
- Moisture ≤ 25%
- Appearance: Black powder
- Package: 1MT/bag or customized
Humic acid are made from selected high quality natural leonardite sourced from specific area in China, using unique extraction technology to keep most of the effective ingredients and much small molecule which makes internal quality are different from others.