Underwear

Prioritize fabrics with high breathability and moisture-wicking properties. For everyday wear, a blend of 95% Combed Cotton and 5% Spandex is the industry standard for comfort and elasticity. For premium lines, consider Modal (beechwood fiber) or Bamboo fiber, which offer superior softness and antibacterial properties. Ensure the fabric weight (GSM) is appropriate—typically 160-180 GSM for standard briefs to ensure durability without being too thick.

Compliance is critical for skin-contact products. You must verify OEKO-TEX® Standard 100 certification to ensure the absence of harmful substances. For the US market, adherence to CPSIA (especially for children's underwear) and FTC labeling requirements (fiber content and care instructions) is mandatory. For the EU, ensure compliance with REACH regulations regarding chemical dyes and Azo-free requirements.

Focus on the stitching technique; look for flatlock seams or four-needle six-thread stitching to prevent skin irritation. Check the elasticity recovery rate of the waistband—it should return to its original shape after being stretched to 2x its length. Additionally, verify colorfastness to washing and perspiration (Grade 4 or higher) to prevent dye migration during wear or laundering.

There is a surging demand for seamless technology (Santoni machines) which eliminates side seams for a 'second-skin' feel. Other high-growth niches include period-proof underwear (requiring 3-4 layers of leak-proof TPU technology), anti-bacterial silver ion coatings, and sustainable/recycled polyester (GRS certified) for eco-conscious brands.

Always request a Pre-Production Sample (PPS) for approval before the mass production begins. For large orders, hire a third-party inspection agency (like V-Trust or SGS) to perform a During Production Check (DUPRO) and a Final Random Inspection (FRI). Focus specifically on size measurement deviations, as a 1-2cm error in underwear can lead to high return rates.

Underwear is a high-volume, low-margin commodity. To get the best price, consolidate your fabric choices; using the same fabric across different styles allows the supplier to buy yarn in bulk, reducing your cost. While standard MOQs are often 1,000–3,000 pieces per style, you can negotiate lower MOQs (e.g., 500 pieces) by choosing 'in-stock' fabrics or colors already available in the factory's warehouse.

Underwear falls under specific HS Codes (e.g., 6107 for men's, 6108 for women's) which may carry high import duties depending on the country of origin and destination. Utilize Made-in-China.com's secured payment services to ensure funds are only released upon proof of shipment. For shipping, Sea Freight is most economical for bulk, but ensure products are packed in moisture-proof PE bags and sturdy outer cartons to prevent mildew during long transit times.

Conduct thorough due diligence by checking the supplier's Business License and Export License. Prioritize Audited Suppliers on Made-in-China.com, as these factories have undergone on-site verification by independent bodies. Use Trade Terms like FOB (Free On Board) to maintain control over your shipping costs and insurance, and always use Escrow-based payment methods for initial transactions.