... extract ingredient 2environmental fertilizer 3improve the growth of plants 4rich npk Compound Fertilizer1. Active ingredientsNPK >=18%-30%Organic matter >=8%-20 ... . b. this product is both rich in microelements (such as NPK ) , and in microelements, such as Ca, Mg, Fe, Zn, and ... consulting the technology department of our company Compound Fertilizer GRANULAR NPK