In the eyewear industry, timing is just as critical as design and material quality. The most stunning sunglass collection will fail if it arrives at your warehouse in September instead of May. Many optical brand owners and wholesale buyers mistakenly believe they can simply place an order a month before their target launch date. In reality, successful B2B procurement requires strategic, long-term planning mapped directly to global manufacturing cycles.
Mastering eyewear seasonal sourcing prevents devastating out-of-stock scenarios during peak sales periods and protects your brand from expedited shipping fees that crush profit margins.
As a leading manufacturing partner, Wenzhou Zhantai Glasses Co., Ltd. operates on a tight, highly orchestrated production schedule. Today, we are sharing an insider’s look at exactly how we timeline orders. We will break down the true lead times of manufacturing, the massive impact of the Chinese New Year, and provide a comprehensive 12-month procurement calendar to keep your supply chain perfectly aligned with global retail seasons.
The Anatomy of Eyewear Manufacturing Lead Time
Before you can schedule an order, you must understand how a factory allocates time. A standard OEM/ODM order does not begin the day you sign the contract; it follows a strict sequence. A typical timeline for a custom eyewear order requires approximately 90 to 120 days from concept to your warehouse door:
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Design and CAD (7 to 10 days): Translating your sketches into technical engineering files that the factory machines can read.
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Prototyping and Sampling (15 to 20 days): Creating the physical sample. If you require custom acetate colors or new memory metal alloys, this phase can take longer as we source raw materials.
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Tooling and Molds (20 to 30 days): If you require a custom TR90 or PC injection-molded frame, we must cut precision heavy steel molds.
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Bulk Production (45 to 60 days): The core manufacturing phase. This includes material curing, CNC machining, tumbling, hinge assembly, and polishing.
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Quality Control (QC) and Packing (5 to 7 days): Rigorous optical testing, AQL inspections, and secure master carton packing.
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International Logistics (25 to 40 days for Ocean Freight): Shipping from the port in China to the US or European ports, plus customs clearance.
If you add these up, you realize that successful eyewear seasonal sourcing requires placing orders 4 to 5 months ahead of your retail launch.
The Spring/Summer Sourcing Window (Order: October – December)
Spring and summer represent the absolute peak revenue seasons for the sunglass industry. Retailers expect fresh inventory on their shelves by March or April, ready for spring break, music festivals, and summer vacations.
To hit this target, your eyewear seasonal sourcing window opens in October.
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October: Finalize your designs, approve technical CAD drawings, and initiate the prototyping phase.
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November: Approve the physical samples and wire your bulk production deposit. The factory cuts the molds and begins raw material procurement.
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December: The factory executes bulk production. At Zhantai Glasses, our CNC machines run at maximum capacity during this period to ensure we finish your frames before the massive disruption of the upcoming holiday season.
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Late January/February: Goods load onto container ships, arriving at your domestic warehouses just in time for the spring retail rollout.
The Fall/Winter Sourcing Window (Order: April – June)
While sunglasses are the stars of summer, the fall and winter seasons drive optical frame sales and specific cold-weather activewear (like polarized snow-glare sunglasses and safety eyewear). Retailers aim to stock these collections by September.
You must open your Fall/Winter sourcing window in April.
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April: Begin the design and sampling phase for your autumn color palettes (deep tortoiseshells, matte blacks, and rich burgundies).
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May: Finalize samples and place the bulk order.
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June to July: The factory completes bulk production.
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August: Goods ship via ocean freight, arriving precisely when consumers shift their buying habits toward back-to-school and winter fashion.
The Critical Impact of Chinese New Year (CNY)
If you ignore the Chinese New Year, you will break your supply chain. CNY usually falls between late January and mid-February. Unlike Western holidays where businesses close for a few days, CNY shuts down the entire Chinese manufacturing and logistics infrastructure for up to three weeks.
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The Pre-CNY Rush (December – January): Every buyer in the world tries to force their orders out of the factory before the holiday. Factories operate at peak capacity. If you place a new bulk order in mid-January, no factory can finish it before they close. Your order will sit on the floor until March.
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The Shutdown (February): Factories, material suppliers, and shipping ports effectively halt operations. Workers travel to their home provinces.
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The Post-CNY Ramp-Up (March): When factories reopen, it takes weeks to hire new staff, recalibrate machinery, and clear the backlog of pre-holiday orders.
The Zhantai Factory Rule: If you want your sunglasses delivered for a Spring/Summer launch, you must approve your bulk order and pay the deposit by late November. This gives our production lines the runway to finish and ship your goods before the pre-CNY port congestion hits.
Timeline for Holiday Promotional Stock (Black Friday & Christmas)
Q4 holidays (Black Friday, Cyber Monday, and Christmas) require massive inventory depth. If you run out of stock during the Black Friday weekend, you lose your most profitable days of the year.
To prepare for late November sales, you must have your inventory securely in your domestic warehouse by mid-October. Working backward:
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August: Your goods must be on a ship crossing the ocean.
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June – July: The factory is executing your bulk production.
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May: You finalize your order quantities and pay the deposit.
Never wait until September to order Black Friday stock. By that time, air freight is your only option, and holiday air freight rates will completely consume your promotional profit margins.
The Strategic Advantage of Off-Season Sourcing
Smart procurement managers do not just follow the crowd; they exploit the factory’s calendar. The period immediately following the Spring/Summer delivery rush (late March through May) generally represents a slight dip in global ordering volume.
Executing your eyewear seasonal sourcing during this off-season provides massive strategic advantages:
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Faster Lead Times: With less congestion on the production floor, factories can often push your orders through the CNC and assembly lines 15% to 20% faster.
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Dedicated R&D Bandwidth: Factory engineers have more time to collaborate with you on complex custom tooling, intricate acetate carvings, or new memory metal prototypes.
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Negotiation Leverage: Factories want to keep their assembly lines running and their workers busy during slower months. You hold much stronger leverage to negotiate favorable payment terms or lower Minimum Order Quantities (MOQs) during the spring lull.
The 12-Month Eyewear Sourcing Calendar
To keep your procurement strategy organized, use this 12-month B2B summary calendar based on standard ocean-freight timelines:
| Month | Factory Status | B2B Buyer Action Required |
| Jan. | Pre-CNY Rush. Extreme congestion. | Finalize any emergency air-freight shipments. Plan Fall/Winter designs. |
| Feb. | Chinese New Year. Factories closed. | Review past year sales data. Prepare Q3/Q4 forecasts. |
| Mar. | Post-CNY Ramp-Up. Backlog clearing. | Initiate design and sampling for Fall/Winter collections. |
| Apr. | Normal Production Capacity. | Place Bulk Orders for Fall/Winter. |
| May | Normal Production (Off-Season Advantage). | Place Bulk Orders for Black Friday/Q4. |
| Jun. | High Production Volume. | Monitor Q4 production. Begin Spring/Summer concept designs. |
| Jul. | High Production Volume. | Approve Spring/Summer prototypes. Finalize Q4 shipping. |
| Aug. | Q4 Goods shipping via Ocean Freight. | Last chance for early Spring/Summer sampling. |
| Sep. | Normal Production. | Prepare Q4 marketing. Finalize Spring/Summer designs. |
| Oct. | High Production Volume. | Place Bulk Orders for Spring/Summer. |
| Nov. | Peak Production (Pre-CNY planning). | Hard Deadline: Approve all Spring/Summer orders to ship before CNY. |
| Dec. | Extreme Production Rush. | Finalize logistics bookings to beat port congestion. |
Conclusion: Align with Your Manufacturer
Successful optical brands do not treat sourcing as an afterthought. By integrating this eyewear seasonal sourcing calendar into your business model, you transition from reactive purchasing to proactive supply chain management.
At Wenzhou Zhantai Glasses Co., Ltd., we partner closely with our clients to forecast production windows months in advance. We help brand managers navigate the complexities of Chinese New Year, optimize their ocean freight schedules, and utilize off-season manufacturing advantages. When you align your retail launch dates precisely with our factory production schedules, you guarantee that your premium eyewear arrives on time, on budget, and perfectly positioned for peak seasonal sales.
