Sock yarn

For B2B procurement, the industry standard for durable sock yarn is a blend of 75% Superwash Wool and 25% Nylon (Polyamide). The wool provides thermal regulation and moisture-wicking properties, while the nylon is critical for abrasion resistance at the heel and toe. For luxury markets, consider blends including Cashmere or Silk, but ensure a minimum of 20% synthetic fiber to prevent sagging and premature wear.

Buyers must confirm the Yarn Count (e.g., 4/16 Nm or 210m/50g) and the Twist Multiplier. For sock production, a high-twist yarn is preferred as it increases durability and reduces pilling. Ensure the yarn is supplied on cones (industrial put-up) rather than hanks or balls if you are using circular knitting machines, and verify the moisture regain percentage to ensure you are not paying for excess water weight.

To enter premium markets, suppliers should provide OEKO-TEX® Standard 100 certification to guarantee the absence of harmful substances. If sourcing organic fibers, a GOTS (Global Organic Textile Standard) certificate is mandatory. For the European market, ensure compliance with REACH regulations regarding dyestuffs, and for the US, verify that the yarn meets FTC labeling requirements for fiber content accuracy.

Request a Grade 4 or higher rating on the ISO 105-B02 scale for colorfastness to light and washing. Shrinkage should be strictly controlled within +/- 3% after a standard machine wash cycle. It is highly recommended to request a pre-shipment lab dip (Lap-dip) for color matching (Pantone) and a sample cone to perform a tension test on your specific machinery.

Yarn is dyed in batches; dye lot inconsistency is a major risk. Always stipulate in the contract that the entire order must come from a single dye lot. If multiple lots are necessary, require the supplier to clearly mark and segregate them. Use Made-in-China.com's Inspection Service to verify color consistency across the batch before the final payment is released.

Raw material prices for wool and nylon fluctuate with global commodities markets. Negotiate a formula-based pricing model for long-term contracts. For MOQs, while custom dyeing usually requires 50kg-100kg per color, you can often secure lower MOQs by selecting from the supplier's 'Ready to Ship' stock service colors, which also significantly reduces lead times.

Yarn is highly susceptible to mildew and odors during sea freight. Require the use of heavy-duty PE inner bags and desiccant silica gel packs inside every carton. Ensure cartons are double-walled corrugated fiberboard to prevent crushing. For shipping to high-humidity regions, specify palletization with shrink-wrap to provide an extra barrier against moisture ingress during transit.

Utilize Secured Trading Services provided by Made-in-China.com to ensure that payment is only released to the supplier once Bill of Lading (B/L) or inspection documents are verified. Avoid direct wire transfers to private accounts; always use corporate accounts verified by the platform to prevent fraud and ensure a clear audit trail for customs and tax purposes.