This is the production plant we often cooperate with, which can produce liquid water soluble fertilizer, powder water soluble fertilizer and granular water soluble fertilizer. At present, water-soluble fertilizers containing amino acids, water-soluble fertilizers containing humic acid, water-soluble fertilizers of large quantities of elements, water-soluble fertilizers of medium quantities of elements and water-soluble fertilizers of trace elements can be produced, and the content meets the standards stipulated by the Ministry of Agriculture of China.