CHITOSAN OLIGOSACCHARIDE
For those in the agrochemical industry, it’s no secret that the quality of chitosan oligosaccharide (COS) depends on every step—from raw material sourcing to final packaging. With countless COS products on the market, prices vary widely, and results often differ dramatically. The key lies in the production process. As a leading manufacturer specializing in COS research and production, Wellyou Tech invites you to explore our standardized production process and understand what truly makes a high-quality chitosan oligosaccharide.

1. Carefully Selected Deep-Sea Raw Materials: The Foundation of Quality
Data-Driven Raw Material Selection
High-quality COS starts with high-quality raw materials. At Wellyou Tech, we avoid polluted coastal shrimp and crab shells, selecting only shells from pristine deep-sea regions, free from heavy metals, sand, and contaminants. Each batch undergoes strict heavy metal and microbial testing before entering storage. By rejecting low-quality scraps or waste shells, we eliminate impurities at the source—a step often skipped by small workshops.
Comprehensive Product Testing
Every batch of Wellyou Tech COS undergoes thorough laboratory testing, including activity assays, solubility tests, purity analysis, and heavy metal/microbial checks. Molecular weight, bioactivity, and purity standards must all meet agricultural-grade requirements. Only then do we release the product with a dedicated quality report, preventing adulteration, low activity, or inconsistent concentration.
2. Precision Chitosan Extraction: Maximizing Effective Components
High-Purity Chitosan Selection
Approved raw materials enter our purification workshop, where physical defatting, deproteinization, and demineralization processes extract high-purity chitosan. By preserving the natural molecular structure and avoiding chemical residues, Wellyou Tech ensures the effectiveness of the final COS product—unlike rough extraction methods used by small workshops.
Targeted Enzymatic Hydrolysis: The Core Technology
The heart of COS production lies in our patented enzymatic hydrolysis. Wellyou Tech rejects high-temperature or acid/base degradation methods used elsewhere, instead using controlled enzymatic reactions in stable temperature and humidity environments. This ensures molecular weight stays below 2000 Da, making COS water-soluble and highly bioavailable for crops. Gentle processing preserves bioactivity, creating a technical barrier that low-cost methods cannot achieve.
Multi-Stage Membrane Purification
Post-hydrolysis, the raw solution undergoes multi-stage membrane filtration, removing undegraded large molecules, residual impurities, and salts, leaving only high-activity, small-molecule COS. Purity reaches over 90%, with excellent solubility and no sediment. Unlike unpurified products, Wellyou Tech COS won’t clog irrigation systems or reduce fertilizer efficacy.
Low-Temperature Spray Drying
Purified COS solution is converted into powder using low-temperature spray drying, preventing heat damage and preserving bioactivity. The final Wellyou Tech COS powder is fine, free-flowing, and quickly soluble—ready to deliver rapid results in the field.
3. Standardized Packaging of Chitosan Oligosaccharide: Stability You Can Trust
All tested Wellyou Tech COS products are packaged in moisture-proof, light-proof, and sealed containers. Standardized packaging and storage prevent secondary contamination, ensuring stable activity and long-term quality throughout transport and storage.
Professional, Detail-Oriented, Effective
Producing chitosan oligosaccharide is not simple raw material processing. Every detail—from raw material selection to enzymatic hydrolysis, purification, drying, and packaging—determines the product’s performance. At the source, Wellyou Tech’s strict control guarantees that your crops receive the full benefits of high-quality COS.
Contact us to Learn More About Chitosan Oligosaccharide (COS) Solutions