2026-09-30
blog
Founded in China and backed by over 23 years of manufacturing experience, Junchi specializes in the design and production of protective cases for digital devices. From rugged laptop cases to precision-molded phone and tablet shells, we work with global brands, distributors, and OEM partners to deliver reliable, scalable protection solutions.
When creating a custom product, one of the initial questions to consider is: How long does OEM production take? It is not the number of days that a factory requires to produce the completed product. OEM project may include product design, engineering, prototype development, tooling, material sourcing, sample approval, mass production, inspection, and shipping.
The entire process can take approximately 6 to 12 weeks in the case of a simple plastic accessory. More complicated products may require several months, particularly when custom molds, multiple materials, surface finishes, or multiple rounds of samples are required.
The real-life schedule is based on the product, quantity of order, design availability, tooling, factory capacity, and the rate of approval. Knowing every step will help to create a realistic production plan.
The OEM production schedule is typically a series of steps and not a single production process.
A common project might consist of:
The time required at each stage determines the overall OEM manufacturing lead time.
The initial phase is the transformation of the product concept into specifications that are manufacturable. In the case where the buyer already has full CAD files, drawings, dimensions, materials, and surface requirements, this step can be rather fast. The timeline may be extended in case the design requires engineering work. The average engineering phase can be between 3 and 10 working days depending on the complexity.
Engineers may review:
Design for Manufacturing (DFM) is especially important for injection molded products. It is able to detect characteristics that can cause warping, sink, short shots, difficulty ejecting, or unnecessary tooling complexity prior to production.
A prototype provides the buyer with a physical representation of the product prior to its full production. Manufacturers can utilize 3D printing, CNC machining, soft tooling, or other prototype techniques depending on the product.
The development of prototypes can be completed in about 5 to 15 working days, but complicated designs might take more time.
The stage enables teams to check:
The shortcut of not validating the prototype may save time initially, but may also lead to greater risk of finding out that there are design issues when the production tooling has already been fabricated.
In the case of injection molded products, tooling can be one of the largest contributors to the OEM order lead time.
A simple production mould can require approximately 3 to 6 weeks, and complex multi-cavity tooling can require 6 to 12 weeks or more. The tooling stage may include:
Tooling material is also important. In some low-volume applications, aluminum can be used, whereas P20, H13, or S136 steel can be used in cases where longer mold life and higher production volumes are needed.
Once tooling is finished, the manufacturer typically manufactures first samples. These samples enable the customer to test the real product and then give the green light to mass production. The initial trial can be referred to as a T1 sample.
The sample review can cover:
A simple approval can be completed in a matter of days. Should modifications be required, though, the manufacturer might have to alter the mould or design of the product and create a new sample.
This is one of the reasons why the OEM production schedule must have some buffer time rather than thinking that everything will be approved the first time.
OEM products do not necessarily consist of one material. Rigid plastics, flexible materials, textiles, PU leather, adhesives, metal components, and decorative finishes may be used together as consumer accessories. This introduces additional processes in the production process.
To illustrate, a quality laptop case might need:
The patchwork crocodile texture MacBook cover by Junchi is a handy illustration of how the look of a product can affect production. The design is a mixture of a hard protective construction, a PU leather surface, and a crocodile texture, which means that it does not require the simple molding of a plastic shell to be produced. The preparation of materials, the appearance of the surface, fitting, and assembly, as well as the quality inspection, should be the same.
A good schedule begins prior to the start of manufacturing. Provide complete product specifications, CAD files, material requirements, packaging information, color references, and quality standards as soon as possible.
It is also used to verify:
Clarity will minimize time wastage in back-and-forth communication and help manufacturers better estimate the OEM product development timeline.
When all the stages have realistic time allowances, OEM production is far easier to handle. The final schedule can be affected by product complexity, tooling, materials, order volume, sample revisions, and inspection requirements.
When creating a custom plastic product or consumer electronics accessory, Junchi can be a good place to begin to consider OEM and ODM manufacturing solutions, product development, injection molding, and custom case production.
An effective OEM project begins with a realistic schedule, rather than a rushed deadline. With the design, tooling, sampling, materials, and production being planned in unison, there is less room for expensive surprises. In your upcoming project, collaborate with Junchi to discuss the product needs, the manufacturing process, and construct an effective roadmap between idea and final product. The first step towards better production planning is to understand how long does OEM production take?
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