3. Product efficacy: 1) It is very suitable to be applied directly or used as raw material for formulation. 2) Increasing the utilization efficiency of NPK and other fertilizers in soil. 3) Optimizing soil structure 4) Booting the capacity of water holding and cation exchange and improving aeration condition. 5) Being as chelating and buffering agent 6) Helping to hold water soluble inorganic fertilizers, preventing them from leaching and protecting plants from drastic change in PH. 7) Establishing a desirable environment for microorganism development, stimulating root respiration, formation and growth and thus increasing crops yield and improving the quality. 4. Application: soil application: 10-18 kg/ha fertigation: 8-12 kg/ha 5. package: 25kg/bag or customed packing.