Chitosan is a linear polysaccharide composed of randomly distributed -(1-4)-linked D-glucosamine (deacetylated unit) and N-acetyl-D-glucosamine (acetylated unit). It is made by treating shrimp and other crustacean shells with the alkali sodium hydroxide.

Chitosan has a number of commercial and possible biomedical uses. It can be used in agriculture as a seed treatment and biopesticide, helping plants to fight off fungal infections. In winemaking it can be used as a fining agent, also helping to prevent spoilage. In industry, it can be used in a self-healing polyurethane paint coating. In medicine, it may be useful in bandages to reduce bleeding and as an antibacterial agent; it can also be used to help deliver drugs through the skin.

More controversially, chitosan has been asserted to have use in limiting fat absorption, which would make it useful for dieting, but there is evidence against this.
Other uses of chitosan that have been researched include use as a soluble dietary fiber.

Formulation 1 (oligosaccharide)
Main ingredients
DAC Ash Moisture Solubility
>95% 150g/L >12g/L

Efficacy:
-fertilizer and pesticide and fungicide
-can combined with all the bio pesticide and fungicide
-increase the ripping time, improve the yields more than 15~30%

Application:
-foliar spray diluted by 1:600-800
-drip irrigation diluted by 1:600-800,dosage 15~30L/ha
-water flushing: diluted by 1:400~600
Validity: 2 years

Liquid Bio Chitosan Foliar Fertilizer
Main ingredients
Chitosan N Organic matter Fungicide
>30g/L >50g/L >120g/L >8g/L
Efficacy:
-foliar fertilizer,from another are fungicide
-can be mixed with most liquid fertilizer and pesticide as macro-nutrient
-make leaves more green, avoid yellow, small, disease
-enhance plants resistance to stress,meliorate soil, nontoxic and eco-friendly
Application:
-foliar spray diluted by 1:600-800
One picking crops apply 3-4times in growing period
Several picking crops: apply after each picking

Liquid BIO-Chitosan Root Fertilizer

Main ingredients
Chitosan N Organic matter Nematodes killer
>30g/L >30g/L >150g/L >10g/L
Efficacy:
-fertilizer,from another are pesticide,aminly aim at nematodes
-improve the root system
-enhance greatly improve the utilization rate of macro-nutrients.