Real private-label projects from our 8,000 m² Guangzhou factory, run by a 105-person team since 2011. Every project below followed the same proven path: DFM feedback within 24-48 hours, 3D prototypes in 7 days, PPS confirmation before mass production, and 100% pre-shipment inspection.
“After all these years we finally got a gorgeous trade with such a professional manufacturer. Julong has been most innovative and diligent! Quick reply on anything customers require and delivers reliable solutions.”
A US sports brand was launching its first private-label cycling eyewear line and needed more than a parts supplier. The co-founder wanted a manufacturer that could propose innovative structures, answer technical questions quickly, and turn an unproven concept into a sellable product without long development cycles.
Our R&D engineers returned DFM feedback within 24-48 hours and produced 3D prototypes in 7 days, so the design was fit-tested before any tooling. Final build: lightweight TR90 frame, polarized UV400 lenses, adjustable nose pads, and a laser-engraved temple logo – locked by a PPS (pre-production sample) in the brand’s exact Pantone colors before mass production. A MOQ of 300 pcs per model per color kept the first run lean.
The line launched on schedule with CE and FDA documentation shipped alongside the goods, plus a marketing asset pack – product photography and 2D/3D renders – for the brand’s online store. Justin’s verdict: a professional, innovative and diligent partner. The cooperation continues with new models in development.
“My customers really love the sunglasses that I had made through Julong. Everyone is very impressed with the quality. I’m so happy to have found your services and plan to keep having sunglasses made through you for years to come!”
An outdoor retail founder had learned the hard way that end customers judge a retailer by product quality. He needed a sunglasses production partner that could hold consistent quality across reorders – not just deliver one good first batch – and that would not run out of capacity in peak season.
Every production run is locked by two quality gates: a PPS (pre-production sample) the client approves before mass production begins, and a 100% pre-shipment inspection with a written inspection report. With a monthly capacity of 80,000-100,000 pieces across two manufacturing bases, reorders ship without stock-out risk. Custom lens tints, frame colors, and retail packaging keep his private label distinct season after season.
His customers noticed: “Everyone is very impressed with the quality.” What started as a trial order became a long-term production plan – repeat orders, season after season, with CE and FDA certificates clearing customs every time.
“Everything came perfect in India! Perfect shape and design of sunglasses with high quality. Julong’s expertise team assisted me along the whole process. The products exactly fit my design.”
A distribution founder in India brought his own finished sunglasses design – and the risk every overseas buyer fears: a factory that “approximates” a design instead of reproducing it 1:1, with no guidance through sampling, production, and export documentation.
A dedicated project engineer assisted along the whole process: 3D sampling to verify the exact shape before tooling, a PPS to lock the design, colors, and logo before mass production, and export-ready CE/FDA documentation prepared for customs clearance. Custom retail packaging was produced to match the brand’s market positioning.
The shipment arrived in India in perfect condition – and the products exactly fit the client’s design: the outcome every full-custom OEM project is measured by. The brand now plans follow-up models with our R&D team.
Brand designers, wholesalers and distributors, and e-commerce sellers all move through the same six-stage process. No surprises, no quality drift between the sample and the thousandth unit.
| Stage | What Happens | Timeline / Terms |
|---|---|---|
| 1. Inquiry & DFM | You send your target style, reference images, and quantity. Our R&D team returns structural suggestions and a DFM evaluation. | 24-48 h response |
| 2. 3D Prototyping | 3D-printed prototypes verify shape, fit, and function before any tooling cost is committed. | 7 days |
| 3. PPS Confirmation | A pre-production sample in your exact Pantone colors, logo, and lenses. Mass production starts only after your approval. | Before mass production |
| 4. Mass Production | 8,000 m² dust-free workshop, 105-person team, two manufacturing bases. | 80-100K pcs / month · MOQ 300 pcs per model per color |
| 5. QC & Inspection | 100% pre-shipment inspection of every unit, with a written inspection report. | Every order |
| 6. Delivery & Launch Support | CE/FDA certificates ship with the goods, plus a marketing asset pack: product photography and 2D/3D renders. | With every shipment |
Want to see which models this process can start from? Browse our sports sunglasses product lines or compare OEM, ODM, and private-label options.
Our standard MOQ is 300 pieces per model per color. If you need fewer, orders below MOQ are accepted with a 10% unit-price adjustment to cover machine setup costs. This keeps entry affordable for startups while wholesale buyers get full-volume pricing.
3D prototypes are ready in 7 days, and our R&D team answers structural questions within 24-48 hours. Sampling requires your model reference and customization details; a sample fee applies (payable by PayPal) with freight collected from the buyer.
Yes. We sign an NDA before design discussions, your molds are stored separately and used only for your orders, and our 30+ in-house design patents mean we build original structures rather than copying other brands. Your files are never shared with third parties.
Two gates protect every order: a PPS (pre-production sample) you approve before mass production, and a 100% pre-shipment inspection with a written inspection report. Production follows CE (EN166/EN167/EN174) and FDA standards, and certificates ship with the goods.
Every order ships with the 100% inspection report, the approved PPS, CE/FDA certificates, and a marketing asset pack – professional product photography plus 2D/3D renders – so your team can launch listings and catalogs immediately.
Send your target style or reference images, estimated quantity, target price, logo requirements, and target market via our contact page. You will receive a DFM evaluation within 24-48 hours, followed by a quotation and sampling plan. You can also shortlist models from our product lines first.
Send us your concept, sketch, or reference image. Our engineering team will respond within 12 hours with a DFM proposal, estimated cost, and prototype timeline. No obligation – and a 300-piece MOQ means you can start lean.
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