Vigol Chem Tech Co Vigol Chem. Tech. Co.

From shell to high-purity chitosan

Advanced extraction, purification and modification, with strict quality control, deliver consistent performance across applications.

Raw materials

Where it starts

  • Shrimp shells

    A sustainable and abundant marine by-product, rich in chitin.

  • Crab shells

    A high-quality chitin source with reliable supply throughout the year.

  • Insect biomass

    An alternative, sustainable chitin source with low environmental impact.

The process

Eleven controlled steps

Each stage is monitored, so the final product performs the same way batch after batch.

  1. Raw material reception

    Chitin-rich raw materials are inspected and accepted against quality standards.

  2. Washing

    Raw materials are thoroughly washed to remove dirt, sand and impurities.

  3. Deproteinization

    Proteins are removed using alkaline solution under controlled conditions.

  4. Demineralization

    Minerals are eliminated with acid treatment to obtain pure chitin.

  5. Decolorization

    Pigments and residual impurities are removed to achieve a natural color.

  6. Deacetylation

    Chitin is converted to chitosan through controlled alkaline deacetylation.

  7. Washing and neutralization

    The product is washed and neutralized to remove residual chemicals.

  8. Drying

    Moisture is removed using energy-efficient drying technology.

  9. Milling

    Dried chitosan is milled to achieve the desired particle size distribution.

  10. Sieving

    The product is sieved for uniform particle size and consistent quality.

  11. Packaging

    The final product is packed in high-quality, moisture-proof, food-grade packaging.

Quality control

Six quality checkpoints

  • Raw material testing

    Identity, purity and moisture content analysis.

  • In-process control

    Monitoring of pH, temperature, time and concentration.

  • Filtration check

    Ensures effective removal of insoluble residues.

  • Final product testing

    Degree of deacetylation, viscosity, ash, moisture and heavy metals.

  • Microbiological testing

    Ensures product safety for food, pharma and biomedical use.

  • Batch traceability

    Full documentation and traceability for every batch.

Tell us what your application needs

Standard and custom grades are available. Send us your specifications and we will reply with the grade that fits.

Stainless steel process tanks in a clean production hall