This product is mineral source potassium fulvic acid, fulvic acid 55, resistant to hard water at 23 degrees without flocculation, and does not react in the acidic state of PH value of 1.5. It does not deliquesce in the air, and has no peculiar smell. It can be used as water-soluble fertilizer, drip irrigation, and spraying. Pore ​​blocking risk. Add 3-4kg per ton of urea, 5-8kg per ton of compound fertilizer, and 5kg per ton of ammonium phosphate. The synergy is obviously used in crops, which can greatly improve quality and yield, and can save overall costs.