Silk yarn

Silk yarn is primarily graded using the 6A, 5A, 4A system, with 6A being the highest quality characterized by superior strength, uniformity, and minimal impurities. Buyers should verify the momme weight for fabric-related yarns and the denier (D) for thickness consistency. Ensure the yarn is 100% Mulberry Silk if seeking premium luster and softness, as Tussah or wild silk offers a different texture and lower sheen.

Focus on tensile strength and elongation to ensure the yarn can withstand high-speed weaving or knitting machines. Check the twist level (TPM - Twists Per Meter); a higher twist increases durability and reduces pilling, while a lower twist maintains maximum softness. Additionally, confirm colorfastness to light and washing (Grade 4-5 recommended) to prevent fading in high-end garment production.

Suppliers should provide OEKO-TEX Standard 100 certification to guarantee the yarn is free from harmful chemicals, which is critical for apparel. For organic claims, look for GOTS (Global Organic Textile Standard). If exporting to the EU, ensure compliance with REACH regulations, and for the US market, verify that dyeing agents meet CPSIA standards for lead and phthalate content.

Silk is a high-value commodity with fluctuating prices; therefore, locking in prices through annual contracts can mitigate market volatility. Request FOB (Free On Board) pricing to maintain control over logistics costs. Consider purchasing raw silk in bulk (MOQs of 50kg-100kg) to achieve unit price discounts of 10-15% compared to small-batch dyed yarns.

The most significant risk is material adulteration, where silk is blended with viscose or polyester. Always request a burn test report or a third-party fiber content analysis from labs like SGS or Intertek. Another risk is moisture regain fraud; silk naturally absorbs water, so ensure the commercial weight is calculated based on the standard moisture regain (11%) to avoid paying for excess water weight.

When using Made-in-China.com, prioritize Audited Suppliers with verified production capacities. Negotiate based on lead time guarantees, as silk production is seasonal. Ask for a pre-shipment inspection (PSI) clause in the contract, stating that the balance payment will only be released after a successful quality check of the specific batch.

Silk is sensitive to humidity and odors. Ensure the supplier uses vacuum-sealed plastic inner packaging and sturdy, moisture-proof outer cartons. For shipping to distant markets, sea-air combined transport can balance cost and speed, but for high-grade 6A silk, air freight is preferred to minimize the time the organic fibers spend in uncontrolled maritime environments.

Utilize Secured Trading Services provided by the platform to protect your funds. Never transfer full payments to private bank accounts; always use corporate accounts verified by Made-in-China.com. Implement a staged payment structure: 30% deposit and 70% against the Bill of Lading (B/L) or after a third-party quality inspection report is issued.