What is UV400?
UV400 is a baseline, not a complete compliance story.
Many buyers still ask only one question when sourcing sunglasses:
“Are they UV400?”
The truth?
UV400 is just the starting point-not the full compliance story.
If you’re a brand owner, importer, or distributor, asking only about UV protection may expose your business to unnecessary risks in product quality, compliance, and customer satisfaction.
Before placing your next order, here are 4 questions every professional buyer should ask:
1️⃣ Can you provide a valid test report?
Don’t rely on a simple “UV400” label.
Ask for a third-party laboratory test report demonstrating compliance with ISO 12312-1, which specifies the optical and safety requirements for sunglasses intended for general use.
2️⃣ Are the lenses impact-resistant?
For many markets-especially North America-lens durability is just as important as UV protection.
Ask whether the lenses meet applicable impact resistance requirements such as FDA 21 CFR 801.410 or ANSI Z80.3, depending on your target market.
3️⃣ Can you prove the lenses are truly polarized?
Not every dark lens is polarized.
A reputable supplier should be able to provide polarization test results or demonstrate polarization using appropriate verification methods.
4️⃣ Where are the products manufactured?
Country of origin affects import documentation, tariff classification, quality consistency, and customer confidence. Incorrect origin declarations or incomplete documentation may lead to customs delays, additional inspections, or unexpected duties.
Choosing the right Wholesale sunglasses supplier means more than comparing prices.
Whether you’re sourcing for retail, Amazon, chain stores, or building your own brand, a reliable B2B Private label sunglasses supplier should offer:
✅ Consistent product quality
✅ Transparent compliance documentation
✅ Stable manufacturing capacity
✅ OEM & ODM support
✅ Professional communication throughout the project
At CONCHEN Eyewear, we work with customers worldwide as a UV400 sunglasses manufacturer, sports sunglasses manufacturer, and custom sunglasses wholesale partner, helping brands develop private label polarized sunglasses with reliable quality and flexible manufacturing solutions.
From fashion collections to performance eyewear, we support businesses across North America, sunglasses wholesale, and other global markets with long-term OEM & ODM cooperation.