Collagen peptide

Buyers should prioritize Molecular Weight (Daltons), as lower weights (typically 1,000–3,000 Da) ensure superior bioavailability and absorption. Additionally, verify the protein content, which should be ≥90%, and ensure the product has low ash content (<2%) and low heavy metal levels (Lead <0.5mg/kg) to meet high-purity standards.

For food and supplement grades, suppliers must possess ISO 22000 or HACCP certifications for food safety management. If exporting to the US, FDA Registration is essential; for the EU, EFSA compliance is required. Furthermore, Halal and Kosher certifications are critical for expanding market reach in specific regions.

Bovine collagen (Type I & III) is ideal for skin and joint health and is generally more cost-effective for bulk production. Marine collagen (Type I) is highly regarded for its superior absorption rates and is preferred by premium beauty brands, though it carries a higher price point. Porcine collagen offers a middle ground in pricing but may face religious dietary restrictions in certain markets.

Evaluate the solubility (should dissolve clearly in cold water without clumping) and organoleptic properties (it should be odorless and tasteless). For specialized applications, test the heat stability if the collagen will be used in hot beverages or baked goods to ensure the peptide chains remain intact.

Always request a Certificate of Analysis (COA) for every batch and utilize third-party inspection services (like SGS or Intertek) to perform random sampling at the factory. Ensure the contract specifies that the hydroxyproline content—a marker for real collagen—must meet the agreed-upon percentage.

Focus on Tiered Pricing based on volume; for orders exceeding 500kg, you can typically negotiate a 5-10% discount. Use Made-in-China.com's Secured Trading services to protect your payment until the shipping documents are verified, and always clarify Incoterms (FOB vs. CIF) to avoid hidden logistics costs.

Collagen is sensitive to moisture. Ensure the supplier uses double-layer PE bags inside fiber drums or high-strength cartons. For sea freight, request desiccant packs in the container to prevent clumping or microbial growth caused by 'container rain' during transit through different climate zones.

Consult with a local customs broker to confirm the HS Code (typically 3504.00) and associated tariffs. Ensure all labeling requirements (such as ingredient lists, net weight, and manufacturer details) are printed in the destination country's official language to avoid customs seizures.