“When can the order ship?” sounds like a simple question. In eyewear manufacturing, it rarely has a simple answer.
A factory may need only a few weeks to run a production line, yet the complete project can still take several months. Drawings must be checked. Colors need approval. Samples may require adjustment. Materials, lenses, packaging, inspection, and export preparation all sit on the same timeline.
The most useful date is not the factory completion date. It is the date the finished eyewear can leave the factory with the correct specification, quality, and packaging.
Factory lead time usually refers to the period required to complete a defined manufacturing stage. The problem is that different suppliers may start counting from different points.
One quotation may count from deposit payment. Another may count from sample approval. For a custom project, production normally cannot start until the frame design, color, logo, lenses, and packaging details are confirmed.
A practical project timeline includes:
Buyers should also confirm whether quoted days are calendar days or working days. A stated lead time of 45 days can mean something quite different when weekends, public holidays, or material purchasing periods are excluded.
Adding a logo to an existing frame is one job. Developing a new temple structure, hinge position, and lens shape is another.
Using an existing frame shortens the sampling stage because the mold, construction, and assembly method have already been tested.
A typical sample may involve:
Simple samples are often completed in roughly 7 to 15 working days after all artwork and specifications are approved.
A fully custom frame needs a longer development period. Technical drawings must be reviewed for manufacturability, and new molds or tooling may be required.
The factory also needs to check details that are easy to overlook on a screen: hinge clearance, temple opening angle, lens groove depth, frame balance, nose support, and polishing allowance.
A new custom sample often takes 20 to 40 working days. Complex acetate, titanium, or mixed material designs may take longer.
A common case is a buyer requesting a thinner temple after seeing the first 3D drawing. The change appears minor. It may affect the hinge area, screw position, mold strength, and polishing tolerance. That is no longer a cosmetic revision.
The first physical sample is not always the approved sample.
Color matching may need another round. A logo may look too small once placed on the temple. The frame may fit correctly but feel front heavy. These are normal findings.
Bulk production should normally be counted from approved sample confirmation, deposit receipt, and final specification sign off. Until those items are closed, the factory is still preparing—not producing.
| Frame material or process | Typical bulk lead time after sample approval | Main production requirements |
| Injection frames such as TR90, PC, or CP | 45–60 days | Molding, coloring, assembly, and finishing |
| Conventional metal frames | 45–60 days | Forming, welding, plating, and assembly |
| Рамки ацетата | 75–90 days | Cutting, tumbling, polishing, and adjustment |
| Titanium frames | 75–90 days | Specialized forming, welding, and finishing |
These are planning ranges, not automatic promises.
An order containing one frame in two colors is easier to schedule than a collection with twelve models, four colors per model, and different lens treatments. The total quantity may be similar, but the second order creates far more changeovers, inspections, and packaging combinations.
Production completion also does not mean immediate shipment. Finished frames still require final inspection, cleaning, labeling, packing, carton checks, and export documentation.
Two orders with the same quantity can have very different timelines. Product structure, materials, finishing processes, and approval speed usually matter more than the headline unit count.
New molds, unusual hinges, thick to thin transitions, embedded decorations, and mixed materials add engineering work.
Designs that look attractive in a rendering may also be difficult to polish, plate, or assemble consistently. A responsible factory should raise these issues before tooling begins, even when that discussion adds a few days.
Custom acetate sheets, special plating colors, gradient lenses, polarized lenses, photochromic lenses, and non-standard accessories may require separate purchasing schedules.
Surface finishing is another variable. Hand polishing, two tone plating, or detailed paint filling cannot always be accelerated by adding more operators. Some processes need stable curing, cooling, or drying time.
Packaging can become the unexpected bottleneck. Frames may be ready while printed cases, cloths, sleeves, or retail boxes are still being corrected.
Large orders require more production time, but SKU complexity often causes more disruption than volume alone.
Peak season capacity, testing requirements, third party inspection, and tighter cosmetic standards can all extend the schedule. A buyer accepting only a very narrow color tolerance should expect more sorting and possible rework.
That is not necessarily a problem. It simply needs to be included in the delivery plan.
Delays often begin before the production line starts.
Common causes include:
Many delays occur not on the production line, but during the information confirmation and approval stages.
SUSON’s customization process requires the confirmation of materials, dimensions, colors, functions, and logo designs prior to prototyping; the mass production phase also encompasses in-process quality checks, final inspections, and the reworking of non-conforming products—all of which must be factored into the delivery schedule.
Checklist：
СУСОН offers a standard sampling process; however, when time is tight and requirements are clearly defined, we can proceed directly to mass production following approval of a pre-production (PP) sample.
For brand-new OEM/ODM projects, brands should not simply ask the factory for “production days”; instead, they should request a written schedule that includes milestones for sampling, mass production, quantity control, packaging, and shipment.
A logo change on an existing frame can move quickly. A new acetate or titanium design cannot be treated the same way.
The reliable timeline begins with complete specifications and an approved sample. Material choice, SKU complexity, inspection standards, and buyer response speed shape everything after that.
Planning a new sunglasses or optical frame collection? Share your design, materials, quantity and target launch date with SUSON to receive a project-specific sampling and bulk production schedule.
Вопрос: Does bulk production start when the purchase order is issued?
Not always. Production usually starts after the deposit, approved sample, final specifications, and material confirmation are complete.
Вопрос: Can an eyewear sample be finished in one week?
A basic logo or color sample based on an existing frame may be possible. A new custom structure or mold usually requires more time.
Вопрос: Why do acetate frames take longer than injection frames?
Acetate production involves cutting, tumbling, polishing, adjustment, and more manual finishing. These processes are slower and less suitable for aggressive compression.
Вопрос: Can a factory shorten lead time for an urgent order?
Sometimes. Available materials, existing molds, simple packaging, and limited SKUs make acceleration more realistic. Quality checks should not be removed to recover time.
