Eyewear sunglasses

For frames, professional buyers should prioritize TR90 (thermoplastic) for flexibility, Acetate for premium aesthetics, or 316L Stainless Steel/Titanium for corrosion resistance. Lenses must be Category 3 for general use, providing 100% UV400 protection. Polycarbonate (PC) lenses are preferred for sports due to impact resistance, while TAC polarized lenses are essential for reducing glare in driving or water-based scenarios.

Sunglasses are classified as Personal Protective Equipment (PPE) or medical devices depending on the region. You must ensure products carry the CE Mark (EN ISO 12312-1) for the European Union and FDA Registration (21 CFR 801.410) for the United States, including the Drop Ball Test report to verify impact resistance. For the Australian market, compliance with AS/NZS 1067 is required.

Request a Lens Stress Test to ensure no distortion and a Hinge Cycle Test (minimum 20,000 folds) to verify mechanical durability. For metal frames, a Salt Spray Test (24-48 hours) is critical to ensure the plating won't peel or corrode when exposed to sweat or humidity. Always ask for third-party lab reports (SGS or Intertek) rather than relying solely on factory-issued documents.

Focus on Laser Logo Engraving on the temples or lenses and Customized Packaging (microfiber pouches, hard cases, and branded boxes). Advanced buyers should inquire about Private Mold Development to create unique frame shapes and Anti-Reflective (AR) or Hydrophobic coatings to increase the product's perceived value and functional performance.

The biggest risks are Non-compliance with FDA/CE standards, which can lead to customs seizures, and Substandard Lens Quality (e.g., lack of UV protection) which poses legal liabilities. To mitigate this, use Made-in-China.com's Secured Trading services and hire a Pre-shipment Inspection (PSI) service to verify the UV400 rating and frame finish before final payment.

Standard MOQs for custom acetate frames are usually 300-500 pieces per color, while ready-to-ship (RTS) models can be as low as 10-50 pieces. Negotiate a Sample-to-Bulk Credit, where the sample fee is refunded upon a bulk order. For large volumes, aim for a 10-15% discount by committing to a yearly volume rather than a single one-off purchase.

Sunglasses are lightweight but high-volume due to protective cases. Air Freight is recommended for high-value acetate models to reduce time-to-market, while LCL (Less than Container Load) Sea Freight is cost-effective for bulk promotional plastic sunglasses. Ensure the supplier uses Double-Wall Corrugated Cartons and Internal Dividers to prevent frame deformation during stacking.

Always conduct transactions through Made-in-China.com's Star Audit verified suppliers to ensure the factory actually exists. Utilize Escrow-based payment terms where funds are only released upon confirmation of the Bill of Lading (B/L) or inspection pass. Avoid direct wire transfers to personal accounts; always pay to the registered corporate account of the company listed on the business license.