Uv400 sunglasses

The primary requirement is 100% protection against UVA and UVB rays, blocking wavelengths up to 400 nanometers. Buyers should specify TAC (Triacetate Cellulose) polarized lenses for glare reduction or PC (Polycarbonate) lenses for high impact resistance. Frame materials should range from lightweight TR90 memory plastic to premium Mazzucchelli acetate or corrosion-resistant stainless steel depending on the target market segment.

For the US market, products must comply with FDA 21 CFR 801.410 (Drop Ball Test) for impact resistance and ANSI Z80.3. For the EU, CE Marking is mandatory, ensuring adherence to EN ISO 12312-1. If selling in Australia, the AS/NZS 1067.1 standard is required. Always request Declaration of Conformity (DoC) and valid lab test reports from suppliers on Made-in-China.com.

Request a pre-shipment inspection (PSI) focusing on optical clarity (no distortion), hinge durability (cycle testing), and coating adhesion. For polarized versions, use a polarization test card. Ensure the UV400 protection level is verified using a digital UV light tester. Frame finish should be checked for smoothness, lack of burrs, and uniform color plating.

Suppliers usually offer laser-engraved logos on lenses or temples, customized packaging (hard cases, microfiber pouches, and boxes), and bespoke frame colors via Pantone matching. For ODM, many manufacturers on Made-in-China.com provide 3D prototyping services to develop unique frame shapes based on your sketches.

Utilize Secured Trading Services provided by Made-in-China.com to ensure payment is only released upon confirmation of shipment. Always conduct a factory audit or hire a third-party inspector to verify the supplier's production capacity and ISO certifications to avoid 'trading company' markups if you require direct factory pricing.

Negotiate based on Total Landed Cost. While a supplier might offer a low unit price, check the packaging and shipping costs. For new brands, look for suppliers offering low MOQ (e.g., 100-300 units) for 'ready-to-ship' models, and leverage volume-based discounts (typically 10-20%) as your order scale exceeds 1,000 units per style.

Sunglasses are often classified as medical devices in certain regions (like the US), requiring FDA registration for the importer. Ensure your shipping documents (Commercial Invoice, Packing List) include the correct HS Code (9004.10). For fragile items, insist on double-walled corrugated export cartons and individual bubble wrapping to prevent crushing during transit.