Eyeglass frames fashion sunglass

When sourcing fashion sunglasses, prioritize Cellulose Acetate for premium feel and color depth, or TR90 (Thermoplastic) for lightweight durability and flexibility. For metal frames, Stainless Steel and Monel are standard, but Titanium is preferred for high-end markets due to its hypoallergenic properties and superior strength-to-weight ratio.

Lenses must provide 100% UV400 protection to block UVA and UVB rays. For the US market, compliance with FDA 21 CFR 801.410 (Drop Ball Test) for impact resistance is mandatory. For the EU, ensure products carry the CE mark and meet EN ISO 12312-1 standards. Polarized lenses are a high-value add-on that reduces glare and increases profit margins.

Verify the use of high-quality hinges, such as OBE or Comotec spring hinges, which allow for a flexible fit and reduce breakage. Request information on the plating process (e.g., IP Vacuum Plating) to ensure the frame color does not peel or corrode when in contact with sweat. The bridge design should be evaluated for 'Asian fit' or 'Universal fit' depending on your target demographic.

A capable supplier should offer laser-engraved logos on the temples or lenses, customized packaging (cases, microfiber cloths, and boxes), and the ability to adjust pantoscopic tilt or temple lengths. For fashion-forward brands, look for suppliers that release new private-mold designs quarterly to stay ahead of trends.

Always request a pre-production sample (PPS) before the mass production begins. Utilize third-party inspection services (like V-Trust or QIMA) to conduct a During Production Check (DUPRO) and a Final Random Inspection (FRI). Focus on checking hinge tension, lens clarity, and frame alignment to ensure the batch meets your specifications.

Focus on Total Cost of Ownership (TCO) rather than just the unit price. Negotiate based on volume tiers; for example, a 500-unit order might reduce costs by 15-20% compared to a 100-unit order. Ask for spare parts (screws, nose pads) to be included at no extra cost (usually 1-3% of the order volume) to handle minor after-sales issues.

For small to medium batches, Air Express (DHL/FedEx/UPS) is recommended for speed and safety, typically taking 3-7 days. Ensure the supplier uses double-walled corrugated cartons and that each pair is individually wrapped in a polybag and bubble wrap to prevent scratching during transit. For large bulk orders, Sea Freight (LCL/FCL) is more economical but requires desiccant silica gel packs in the boxes to prevent moisture damage.

Use Secured Payment services provided by Made-in-China.com to ensure funds are only released after you confirm receipt of goods. To protect your designs, sign a Non-Disclosure Agreement (NDA) before sharing proprietary sketches. Verify the supplier's Business License and Export Qualification to ensure they are a legitimate manufacturer and not an unauthorized middleman.