Hebei Shuanglian Biological Technology Co., LTD., which is leader of fertilizers in China, the registered capital is 10Million RMB, covering a total area of 239,760 square meters. Our main products are Pure Organic Fertilizer, Bio-organic Fertilizer, Humic Acid powder & granular, Amino Acid fertilizer, Potassium Humate, Potassium Fulvic Acid, Ammonium Sulfate, NPK Compound Fertilizers, Soil Conditioner , Organic inorganic fertilizer , Water Soluble NPK Fertilizers, Liquid fertilizer. Liquid