In 2001 the Shanghai Tongwei Biotechnology Co. Ltd was founded within Shanghai Academy of Agriculture Science. It has more than ten intermediate and senior scientific and technological specialists, two subcompanies, four offices, two bases of production and experimentation, and one research institute. The major business of the company is the research and deveopment of the technologies in agricultural chemistry, biochemistry and biology. The company is a national joint venture science and technology enterprise with performance of integrating science, industry and trade. Zhang Changshu is a senior engineer. He had been awarded first prize for his multiple high-new technical achievements and the science and technology paper at national class. Also he has developed six classes, more than twenty new products and new technologies in agricultural fertilizer, agricultural chemistry and biofodder. Now the company is centered in Shanghai to develop business nation wide and overseas. Under the guidance thought of Devout Prestige as Fundamental and Technology to Be in Front, the company is fast growing and welcoming peer incorporate participation, reciprocity and developing together.
In order to develop new resources of HA, Shanghai Tongwei uses modern biotechnology to produce biochemical fulvic acid, biological acid and amino fulvic acid etc. series products with raw material from plant sources. The product has high contents, good water solubility, anti-hard water, antacid and antalkali, bivalent metal ion resistance characteristics and has good consolute or chelate capability with N, P, K, Fe, Cu, Mn, Zn, B etc. The product has not only basic feature and function of coal humic acid, but also has higher bioactivity and broader application range.
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. multiple colors (color difference without affecting the quality of product). The dry powder is easy to damp and agglomerate, but not change quality. BFA fine powder is classified as A, B, C, E, F etc. multiple types. It is possible to provide potassium, sodium, calcium, magnesium, ammonium and amino acid etc. multiple dissolubility salt BFA fine powder.