This series product is classified into two classes of concentrated liquor and fine powder with more than ten kinds of series product. The concentrated liquor commonly involves biochemical fulvic acid (BFA) 40-60%, pH4-6, solid contents 40-60%, water insoluble substance<1%. The product is a brownish umber colloid liquid with soy-sauce aroma. It can be classified into 40-50-60% three kinds of specification. Fine powder contains BFA70-90%, pH4-9, moisture<5%, water insoluble substance <1%. The fine powder has light yellow, simple yellow, brown yellow, brownish umber etc