Dupion silk yarn price manufacturers

When purchasing Dupion Silk Yarn, you must focus on the denier (thickness) and the ply. Standard Dupion is often found in 100/120 denier or 50/70 denier. Because Dupion is reeled from double cocoons, the slub density (texture) is a critical quality marker; ensure the slubs are natural and not result of poor reeling. Additionally, verify the tenacity (strength) and elongation to ensure the yarn can withstand high-speed weaving looms without frequent breakage.

Request a Burn Test report or a third-party fiber identification analysis. Pure Dupion silk should smell like burnt hair and leave a crushable black ash. You should also check for ISO 9001 certification of the spinning mill and ask for the Silk Mark or equivalent quality labels. Ensure the moisture regain is within the standard 11%, as excess moisture adds artificial weight to the price.

For entry into the EU and US markets, ensure the yarn is OEKO-TEX® Standard 100 certified, which guarantees the absence of harmful chemicals. If your brand focuses on sustainability, look for GOTS (Global Organic Textile Standard) or GRS (Global Recycled Standard) if blended. Furthermore, ensure the dyeing process complies with REACH regulations to avoid restricted azo dyes.

The price is primarily driven by the grade of the raw silk (e.g., 4A, 5A, or 6A) and the current market rate of silk cocoons. Dyeing requirements (natural vs. synthetic) and winding types (cones vs. hanks) also impact the final cost. For bulk orders, prices are usually quoted per kilogram, and buyers can often negotiate a 5-10% discount for volumes exceeding 500kg.

The primary risk is weight fraud due to moisture absorption or 'weighting' with metallic salts. To mitigate this, specify the conditioned weight in the contract and use third-party inspection services like SGS to verify the net weight before shipment. Another risk is color lot variance; always request a lab dip and ensure the supplier uses the same dye lot for the entire bulk order.

For new suppliers on Made-in-China.com, utilize Secured Trading Services to protect your funds. A standard payment term is 30% T/T deposit and 70% against the Bill of Lading. Regarding shipping, FOB (Free On Board) is recommended for large volumes to maintain control over freight costs, while DAP (Delivered At Place) may be more convenient for smaller sample shipments via air express.

Silk is highly sensitive to humidity and odors. Ensure the supplier uses moisture-proof packaging, typically PE inner bags and high-strength corrugated outer cartons. During sea freight, request containers be placed away from heat sources and ensure the vessel is equipped with dehumidification controls to prevent mildew during long-haul transit.

Check the HS Code (typically 500400) for import duties in your specific country. Be aware of Anti-Dumping Duties or specific Free Trade Agreements (FTAs) that might reduce tariffs. For example, RCEP member countries may benefit from preferential tariff rates when sourcing from certified Chinese exporters.