COS is chitosanpro liquid. It is a kind of functional liquid for crop protection. With 100% molecule weight within 500Da, the material can enter into crop body directly. It can be used as nature fungicide.It has the advantages of high efficiency, environmental friendliness, and no side effects, and is widely used in agriculture and food industry. Meanwhile, as a kind of organic fertilizer, it has the effect of root promoting, crop growth regulation effects, etc.,

Product Detail

Product Tags

General Information

Physical Properties





PH Value


Chemical Properties

Chitosan Oligosaccharide




Organic Matter



Direct bactericidal effect: chitosan oligosaccharide has a direct bactericidal effect, which can destroy the cell structure by combining with the cell wall of microorganisms, resulting in the death of microorganisms. The functional groups in chitosan oligosaccharide can combine with anions in microbial cell walls, interfere with the function of microbial cell walls, and destroy the integrity of cell membranes. This results in a barrier to the exchange of substances inside and outside the cell, eventually leading to cell death.
Immunity enhancement: chitosan oligosaccharide can enhance the plant's resistance to pathogenic microorganisms by activating the plant's immune system. chitosan oligosaccharide can activate plant defense responses, including production of antimicrobial proteins, activation of defense genes, and increase in cell wall thickness. These defense responses can increase the resistance of plants, making them more resistant to infection by pathogenic microorganisms.


COS LQ is a multifunctional fungicide that can be used alone or mixed with other pesticides. It can effectively control fungal diseases of various crops, fruit trees, landscapes, gardens, pastures, cereals and horticultural crops.
It can serve as a basis for creating custom pesticide formulations. Its wide range of applications combined with its natural origin make COS LQ the ideal choice for farmers and growers looking for an eco-friendly and highly effective solution to combat fungal infections.

Frequently Asked Questions

1, Is there dry form of chitosanpro?

Yes, there is dry form;

2, Is the liquid can be directly made into other kinds of formula?

Yes, There are multiple options of the formula, we can also make the formula according to the clients’ requirements.

Packaging and Storage

Packaging and storage Available in 1L, 5L, 20L, 200L or 1KL;
Storage: Dry, cool, direct sun light proof, moisture proof warehouse;
Shelf life: 36 months.

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