Polyaspartic acid can be added into salt feitilizer, mainly playing the  role of controlling release and improving efficiency. For each ton fertilizer,  about 4 kilograms of polyaspartic acid should be added. The specific price varies with market demands.

Polyaspartic acid (potassium salt) is a water-soluble polymer, as well as a strong chelation to metal element. When added into the fertilizer, it can enrich nutrients, slow down the loss of fertilizer, and enhance the absorption of nutrients in plants by playing a synergistic role of sustaining release. At the same time, it can improve the soil structure, increase beneficial bacteria levels, and reduce the pollution of fertilizer and pesticide in the soil. As an excellent plant growth promoter, it can be added into urea and various compound fertilizers to make polypeptide and polycompound fertilizers. In addition, the potassium element in polyaspartic acid (potassium salt) is an essential nutrient for plants.

According to customers' specific needs, we can arrange transportation by air , land or sea.

Polyaspartic acid is an amino acid polymer instead of a hormone. It can modify soil structure and increase the concentration of beneficial bacteria in soil as an excellent plant growth promoter. Polyaspartic acid does not contain any hormones itself. It has biological activity and iscompletely biodegradable. It doesn't cause any pollution to plants and the environment as a green environmentally friendly product.