What to expect
Sunglasses manufacturing in China is centered on two clusters: Wenzhou (Zhejiang) — the world's largest eyewear production hub by volume, and Xiamen (Fujian) — historically focused on premium acetate. The category looks simple but has serious safety implications: UV protection claims, polarization quality, lens optical clarity, and frame durability all vary dramatically. 'UV400' is often falsely claimed; we test UV transmission on samples with calibrated meters before approving any program.
Typical specifications & MOQs
| Typical MOQ | 100–3,000 units |
|---|---|
| Price range (per unit) | $0.80–$28.00 |
| Lead time | 25–50 days |
| Common materials | TR-90 (lightweight nylon), Polycarbonate frames, Cellulose acetate (premium), Stainless steel 304, Titanium (premium), Aluminum-magnesium alloy, PC lenses (impact resistant), CR-39 lenses (optical quality), TAC polarized lenses (multi-layer), Glass lenses (premium) |
Top manufacturing regions
Common quality issues to watch for
UV400 claim false (insufficient UV protection)
CommonHow to catch it: UV transmission test 280-400nm
Polarization not actually polarized
CommonHow to catch it: Polarized test card, two polarizers crossed
Lens optical distortion
ModerateHow to catch it: ANSI Z80.3 prism, refractive power test
Frame breaking at hinge
CommonHow to catch it: 1,000-cycle hinge open/close test
Coating peeling or scratching easily
CommonHow to catch it: Standardized abrasion test, salt spray test
Color difference between left and right lens
ModerateHow to catch it: Visual matching, transmission spectrum
Acetate fading or warping
ModerateHow to catch it: Heat resistance test, UV exposure aging
Required certifications & compliance
- FDA Compliance (impact resistance — US)
- ANSI Z80.3 (US optical quality)
- EN ISO 12312-1 (EU)
- AS/NZS 1067 (Australia)
- UV protection rating
- California Prop 65
- CE marking (EU)
How we help
1. Brief
You tell us the product, target spec, quantity, and budget.
2. Source
We shortlist 3–5 verified factories and benchmark pricing.
3. Sample
We pull samples, run them through QC, and ship to you.
4. Produce
We supervise production with in-line and pre-shipment QC.
5. Ship
We handle customs, freight, and door-to-door delivery.
FAQs about sourcing Sunglasses
What does 'UV400' actually mean and is it always true?
UV400 means lenses block 99.9%+ of UV up to 400nm wavelength — covering UVA (315-400nm) and UVB (280-315nm). Quality lenses genuinely achieve this through embedded UV absorbers, not coatings. Cheap lenses with a sprayed UV coating may degrade in months. We measure UV transmission with calibrated photometer ($300-600 testing equipment) on samples — failure rate is 15-30% on budget factories. Insist on third-party UV testing certificates.
How do I verify polarization is real?
Two-test method: place suspected polarized lens against a known polarized lens at 90° angle — should turn black if both are polarized. Or check LCD screens (phone, computer) — polarized lenses change color/brightness when rotated 90°. Real polarized lenses are TAC (tri-acetate cellulose) with a polarization film sandwiched between layers. Cheap 'polarized' lenses use single polarizing film on outside that scratches off.
What's the realistic price for quality sunglasses?
FOB Wenzhou for verified UV400 + polarized + decent frame: $1.50-4.00 (basic styles), $4-9 (mid-range), $10-20 (premium acetate or titanium). Anything below $1.50 means compromised lenses, frames, or both. The big retail brands (RayBan-tier) source at $6-15 FOB with quality control. Walmart-tier sunglasses are $1-3 FOB.
Should I use TR-90, acetate, or metal frames?
TR-90: most popular, lightweight, durable, affordable ($0.30-1.20 frame cost). Acetate: premium feel and color depth, customizable patterns, $1.50-6.00 frame cost. Stainless steel: durable, mid-range, $0.80-3.00. Titanium: lightweight premium, hypoallergenic, $4-15 frame cost. Polycarbonate: cheapest, kid-friendly, can crack at hinges. Pick based on price positioning.
What MOQ should I expect for custom sunglasses?
Stock frames with custom logo: 200-500 pieces. Custom frame color: 500-1,000 pieces. Custom frame mold (new shape): 1,000-3,000 pieces, $1,500-5,000 tooling cost. Custom packaging/cases: 500-1,500 pieces. Premium custom (acetate hand-finished): 300+ pieces at premium pricing.
What about lens coatings — are they worth it?
Anti-reflective: useful for clarity, cheap to add ($0.20-0.50 per lens). Hydrophobic: water-shedding, useful, $0.30-0.80. Mirror coating: aesthetic, $0.40-1.50. Photochromic (color-changing): premium, $2-5 per lens. Cheap coatings (especially mirror) scratch easily — demand abrasion testing. Quality coatings done in vacuum chambers vs cheap dipping methods.
How do I handle prescription sunglasses?
Most Wenzhou factories offer Rx (prescription) capability — but quality varies enormously. Real Rx requires CR-39 or polycarbonate lenses (not the standard PC injection-molded blanks), proper edging, and optical-grade frames. Cost increase $5-15 per pair. MOQ usually 100+ pairs. Significantly higher complexity than non-Rx — only work with factories that have dedicated Rx production lines.
What about ANSI Z87.1 safety glasses?
Safety eyewear is a different category — Z87.1 requires high-velocity impact testing, side protection, marked frames. Most Wenzhou factories do not produce certified safety eyewear. We can source these from specialized factories in Wenzhou and Taizhou. ANSI Z87.1 certification adds $100-500 testing per design, 4-8 weeks. Insurance/workplace markets demand certified product — uncertified imports rejected by major distributors.