Why Buyers Come to China in the First Place
China produces roughly 80% of the world’s eyewear. Within China, Wenzhou alone accounts for over 60% of global acetate frame production. If you’re building a brand, supplying a retail chain, or wholesaling to optical shops, at some point you’ll be sourcing from China — the question is whether you do it well.
This guide walks through the actual process: from your first supplier search to receiving your first container. No fluff, no sales pitch. Just what works.
Step 1: Know What You’re Looking For Before You Start
The biggest mistake new buyers make is contacting factories before they know their own requirements. A vague inquiry (“I want to buy sunglasses”) gets you a vague quote — and a supplier who assumes you don’t know the market.
Before you reach out to anyone, clarify these five things:
- Material range: Acetate, TR90, titanium, aluminum-magnesium, ULTEM? Each has different tooling, lead times, and price points.
- Order volume per style: This determines whether you need custom tooling or can use stock styles with private labeling.
- Target retail price: Your cost structure needs to support your go-to-market pricing. Material and finishing choices should work backward from this.
- Certification requirements: CE for Europe, FDA for the US, ISO for certain retailers. Not all factories can provide compliant documentation.
- Timeline: From design approval to shipment, typical production is 45-60 days. Rush orders cost more and carry higher QC risk.
Step 2: Finding Suppliers (Without Getting Lost)
There are three ways buyers typically find Chinese eyewear suppliers. Each has pros and cons.
Alibaba / Made-in-China (B2B Platforms)
Good for: initial exploration and comparing multiple suppliers quickly.
Limitations: many “manufacturers” on these platforms are trading companies. They can still deliver quality, but you’re paying a margin and losing direct control over production.
Trade Fairs (Wenzhou Optics Fair, MIDO, Silmo)
Good for: seeing products in person, meeting factory owners directly, and building relationships.
Limitation: once-a-year opportunity. If you miss the fair, you’re waiting another cycle.
Referrals / Factory Visits
Good for: serious long-term partnerships. Visiting the factory (or a video tour) tells you more than any sales conversation.
Limitation: requires more time and travel budget.
Step 3: Separating Real Factories from Trading Companies
This is the single most important skill in China sourcing. A trading company can be a legitimate partner — but only if you know you’re working with one, and price accordingly.
Here’s how to tell the difference:
| Question | Real Factory | Trading Company |
|---|---|---|
| Where is production done? | Can give exact address, arrange visit | Vague or “our partner factory” |
| Can I see production photos? | Has them, shows real workshop | Stock photos or generic images |
| What’s the monthly capacity? | Concrete number (e.g., 50,000 pairs/month) | Unclear or exaggerated |
| Can you customize materials? | Discusses acetate source, titanium grade, etc. | Generic “yes, we can” |
| Sample fee policy? | Clear policy, often refundable | Unclear or non-refundable |
Step 4: The Sampling Process
Never go straight to production. The sampling phase is where you verify that the factory understands your requirements and can execute them.
A proper sampling process looks like this:
- Send reference designs or specs to 3-5 shortlisted suppliers
- Receive quotations (typically within 2-3 days for standard inquiries)
- Select 2-3 suppliers to produce samples (pay sample fee: $30-80 per style)
- Evaluate samples for: build quality, finish, dimensional accuracy, packaging
- Select your production partner based on sample quality + communication quality
Sample fees are typically refunded when you place a bulk order. This is standard industry practice and a good sign — it means the factory is confident in earning your business.
Step 5: Negotiating and Finalizing Specifications
Your proforma invoice should specify every detail. Ambiguity is the enemy of quality control.
Make sure these are documented:
- Material specification: e.g., “Mazzucchelli acetate” or “Japan-sourced beta-titanium” — not just “acetate” or “titanium”
- Dimensions: lens width, bridge width, temple length — in millimeters
- Finishing: matte, gloss, brushed, anodized, etc.
- Lens specifications: if lenses are included, specify material, coating, and testing standards
- Packaging: individual polybag, hard case, soft pouch, barcode label — all of it
Step 6: Production and Quality Control
Once production starts, you have two QC checkpoints available:
Mid-production inspection: Visit the factory (or hire a third-party inspector) when 30-50% of units are completed. This catches systemic issues early.
Final inspection: Before shipment, inspect finished goods for: dimensional accuracy, finish quality, logo application, packaging completeness, and random functional tests (hinge smoothness, temple alignment).
Third-party inspection services (like SGS, Intertek, or local Wenzhou inspectors) cost $200-400 per day. For orders over $10,000, this is insurance worth buying.
Step 7: Shipping and Logistics
Most eyewear orders ship from Wenzhou via:
- Air freight: 5-10 days, costs $4-8/kg. Good for urgent orders under 300kg.
- Sea freight: 25-40 days, costs $80-150 per cubic meter. Economical for full container orders.
- Express courier: 3-7 days, costs $6-12/kg. Good for samples and small trial orders.
Work with your supplier’s freight forwarder or arrange your own. Either way, make sure Incoterms are clear (FOB, CIF, DDP — know what you’re paying for).
Common Pitfalls (and How to Avoid Them)
Pitfall 1: Choosing Solely on Price
The cheapest quote usually means corners are being cut — in material grade, finishing time, or QC rigor. Get at least three quotes and compare specifications, not just price.
Pitfall 2: Not Visiting the Factory
Photos can be misleading. A factory visit (or at minimum a live video tour) tells you what you’re actually working with. If a supplier refuses a video tour, that’s a red flag.
Pitfall 3: Vague Contracts
“Acetate frame” is not a specification. “Mazzucchelli acetate, matte finish, color code 2066, 5-barrel hinge” is a specification. The more precise your contract, the less room for misunderstanding.
Pitfall 4: Ignoring After-Sales Support
Defects happen. What matters is how the supplier handles them. Before you order, agree on: what constitutes a defect, what the replacement policy is, and how quality disputes are resolved.
Why Buyers Work With Wenzhouframe
We’re a Wenzhou-based manufacturer (established 2015) with a 8,000 m² facility, ten production lines, and 1,000+ skilled technicians. We work with acetate (including ISCC-certified eco-acetate), titanium, TR90, ULTEM, and aluminum-magnesium alloys.
Our process is straightforward: you share your design or reference, we quote with clear specifications, we produce samples for your evaluation, and we scale into production with flexible MOQs and NDA protection.
Whether you’re ordering 100 pieces or 10,000, the principle is the same: specify clearly, sample first, and build the relationship over time.
- WhatsApp: +86 152 5809 0639 (Mimi)
- Email: mimi@wenzhouframe.com
Wenzhouframe — Established 2015 in Wenzhou, China. Optical frames, sunglasses, reading glasses, blue light glasses. OEM/ODM with NDA protection. Factory-direct pricing with flexible MOQ.
FAQ
What’s the minimum order quantity for custom designs?
It depends on the material. Acetate: typically 200 pieces per color. TR90: 300-500 pieces per mold. Titanium: 200-500 pieces. We also offer lower MOQs on select stock styles — contact us with your specific requirements.
How long does the sampling process take?
Typically 7-14 days from design approval to sample shipment. 3D prototyping can shorten this for new designs. Shipping adds 3-7 days depending on your location.
Do I need to visit the factory in person?
It helps, but it’s not required. Many of our long-term buyers started with a video factory tour and built trust through consistent sample and production quality. That said, if you’re placing a large first order, a visit is good practice.
