Chitosan is a linear polysaccharide composed of randomly distributed β-(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.

Medicine Grade
1. Promoting blood coagulation and wound healing;

2. Used as drug sustained-release matrix;

3. Used in artificial tissues and organs;

4. Improving the immunity, guarding against hypertension, regulating blood sugar, anti-ageing, enhancing acid constitution,etc,

5. It can also be used in membrane materials, medical materials,etc.

Food Grade
1. Antibacterial agent

2. Fruit and vegetable preservatives

3. Additives for health-care food

4. Clarifying agent for fruit juice

Industrial Grade

1. Chitosan has good adsorption characteristics of heavy metal ion, applied in treatment of organic wastewater, dye wastewater, water purification and textile industry.

2. Chitosan can be also applied in paper-making industry, improving the dry and wet strength of paper and surface printability. 

Water Soluble Grade 
Water soluble grade Chitosan is transformed from chitosan through carboxylation, freely soluble in water and the character is stable. It has excellent moisture absorption, moisture retention, opsonization, bacteria inhibition, etc. Applicable to various cosmetics, such as emollient cream, shower gel, cleaning cream, mousse, advanced ointment frost, emulsion and colloid cosmetics, etc. Also applicable to moisturizing and antistaling agent for food, fruits and vegetables, flocculant for sewage treatment, drug sustained release agent, nontoxic adhesive, auxiliaries for dyeing& printing and paper making, etc.