... natural minerals. A high-efficient soil conditioner. Chemical NPK Fertilizer GranularChemical NPK Fertilizer Granular can improve soils fertility, and modulate soil nutrition ... kind of high efficacy compound fertilizer. Types as follows:2.1 NPK: 8-4-8 with seaweed: 10% + organic matter: 20% + Ca ... , Zn, Fe, etc.2.10 NPK: 4-4-4 with seaweed: 10% + organic matter: 50% + Ca, Mg, Zn, Fe, etc.Validity ...