1.High function for feed additive.organic fertilizer 2.High quality,high purity, 3Small,Middle,High 4.improve ... exchange capacity (CEC), water-holding capacity, and the capacity of fertilizer retention. 2) Promoting nutrient uptake by plants and enhances the ... Long-term research showed that humic substances bond many organic and non-organic substances into poorly soluble or insoluble compounds,so it ...