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Dear Sir, We want to purchase bulk qty of humic acid for manufacturing of fertilizers.compound: 85% POTASSIUM FULVIC HUMATE + 5%N + 5%P + 5%KContent: HA dry base 40%min, organic matter dry base 55%min, water solubility 98%minMoisture 5%, PH Value 5-7compound: ZINC HUMATE + 8%N + 5%P + 3%KZINC SULFATE 20% (zinc ion 4%)ï¼a’HA dry base 40%min, organic matter dry base 55%min, water solubility 85%min PH Value ï¼a“8Thanks.