An original equipment manufacturer (OEM) builds the physical components that other brands use to assemble products they sell under their own names. For ecommerce businesses that lack the machinery to manufacture at scale, an OEM partnership bridges the gap between an initial concept and a product ready to assemble and ship.
Delivering at volume is one of the tests of a growing product business. Ryan Close, founder of the cocktail appliance brand Bartesian, faced this hurdle when large purchase orders started rolling in. “We were starting to get pretty sizable orders, 5,000 units, when there was no way we could produce,” he says on Shopify Masters. Partnering with Hamilton Beach Brands, which had manufactured appliances for decades, allowed Bartesian to hand off hardware fabrication to an experienced OEM.
Learn what OEM is in manufacturing, how these relationships fit into global supply chains, and the steps to locate and vet an OEM partner.
What is OEM in manufacturing?
An OEM is a company that produces parts and components that another brand then uses to produce finished products. Short for “original equipment manufacturer,” an OEM produces the physical goods, while the hiring brand retains its intellectual property and handles assembly, marketing, distribution, and retail sales.
Generally, OEMs sell these goods to other manufacturers, which integrate them into larger, more complex products—such as a car company buying OEM brake pads to install on a vehicle chassis. The original manufacturer focuses on its core strengths: raw material sourcing, production line optimization, and quality control.
The OEM manufacturing model exists across many physical product categories. It’s especially common in the automotive and computer industries. For example, major car manufacturers rarely make every component of a vehicle. Instead, they rely on a vast network of third-party suppliers to produce everything—spark plugs, brakes, electronic components, and so on.
Where OEMs fit in the supply chain
A product travels a long way from raw materials to the end consumer. The traditional commercial pipeline follows a linear path: manufacturer to wholesaler to retailer to consumer.
An OEM sits at the beginning of that path. OEMs focus on producing components according to another manufacturer’s product design specifications. Once the OEM builds the inventory, it ships the finished components to the manufacturer. From there, the goods are assembled and enter standard supply chains—moving into fulfillment warehouses, passing through business-to-business (B2B) wholesalers, or heading to ecommerce storefronts for direct-to-consumer (DTC) delivery.
How OEM manufacturing works
- Develop your product concept
- Find and evaluate OEM suppliers
- Negotiate your pricing, MOQs, samples, and lead times
- Begin manufacturing, quality testing, packing, and fulfillment
- Continue to build a relationship with the supplier over time
Bringing a custom product to market requires a handoff between design and production. You provide the specifications, blueprints, or formulations, and the manufacturer turns them into finished products. The process unfolds in five steps:
1. Develop your product concept
Map out your industrial designs, technical blueprints, or ingredient formulations. Because you retain the design ownership and intellectual property, your initial documentation must be precise. Factories require concrete deliverables before they can issue an accurate quote, such as a product requirements document (PRD), detailed computer-aided design (CAD) files, or a bill of materials (BOM) listing every raw component.
An OEM will build exactly what you outline. If there is a flaw or a missing dimension in your schematics, the factory will replicate that mistake across finished units, leaving you with unsellable inventory and a costly retooling process. Iron out the technical parameters before approaching a facility.
2. Find and evaluate OEM suppliers
Finding the right OEM requires a mix of research and validation. Some businesses start their search on global directories to source potential manufacturers.
When it comes to finding a manufacturer, Razvan Romanescu, founder of the beauty and personal care brand Underlining, recommends casting a wide net for initial research. “I would talk to a lot of different people, try to reach out to people on Alibaba, AliExpress, and have conversations with them. You’ll find a large variety of different prices, quality, turnaround time,” he says on an episode of the Shopify Masters podcast.
However, online listings can occasionally be misleading. Kevin and Jin Chon, founders of the pillow brand Coop Sleep Goods, warn that digital profiles require careful vetting. “You can start online with platforms where they list, but you’ll soon find you’re dealing with a trading company or the factory picture does not match the actual factory,” Jin says on Shopify Masters.
Here are some indicators of a legitimate factory:
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Up-to-date International Organization for Standardization (ISO) quality standards certifications
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Clear documentation of an internal production process
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Willingness to accommodate third-party factory audits
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Strong communication and responsiveness
Razvan of Underlining notes that highly motivated factories stand out early in the outreach phase. “You’ll be able to tell very quickly who the hungry ones are,” he says. “They will go above and beyond to send you free samples, flood you with things, give you information,” he says.
3. Negotiate your pricing, MOQs, samples, and lead times
Once you select a few prospective partners, request a prototype or sample run for a quality control check. Use this stage to negotiate your minimum order quantity (MOQ), per-unit production costs, and manufacturing lead times. When entering these negotiations, remember that MOQ, per-unit cost, and lead time act as balancing levers. A factory may lower your MOQ to accommodate a smaller initial launch, but it typically will raise the per-unit cost to protect its margins.
Chasing the lowest per-unit price, on the other hand, means committing to a large order volume that can tie up your cash flow in inventory. And if you need a faster lead time for a seasonal rush, expect the OEM to charge a premium or require a higher order minimum to prioritize your line.
Ensure your contract specifies who owns the tooling and molds, so you can move production elsewhere if the relationship ends.
4. Begin manufacturing, quality testing, packing, and fulfillment
When you approve the prototype, authorize full-scale manufacturing. For larger production volumes, plan an in-person visit or hire an independent inspector to verify the output before it ships. A standard quality check involves a pre-shipment inspection (PSI), where inspectors pull a statistically relevant sample size from your production run to test dimensions, functionality, and aesthetic defects against your original blueprints.
As Jin of Coop Sleep Goods says, “Once you hit scale, you do have to hit the road, and you have to see it and verify it for yourself.” Once the goods pass inspection, the OEM prepares the shipment for freight forwarding to your warehouse or manufacturing facility.
5. Continue to build a relationship with the supplier over time
Treat your manufacturer as a strategic partner rather than a transactional vendor. When you pay reliably, communicate clearly, and give ample warning about spikes in demand, factories are far more likely to prioritize your production runs during peak seasons.
Establish a structured communication cadence, such as bi-weekly or monthly production meetings. Share your rolling 12-month sales forecasts with your factory point of contact. Giving your OEM visibility into your projected order volume lets them secure raw materials ahead of time and reserve capacity on their production lines.
Benefits and challenges of using an OEM
Evaluating an OEM partnership requires weighing the long-term cost-effectiveness of custom production against the demands of managing factory relationships.
Benefits of OEM manufacturing
OEM advantages include:
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Quality control. Working directly with the facility making your items lets you implement rigorous testing protocols. You define the components and materials used, ensuring the final product meets your criteria.
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Cost-effectiveness. By skipping brokers and trading companies, you buy directly at factory-level pricing. This can support your gross margins and unlock opportunities to reduce costs over the long-term as you scale production.
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Access to specialized expertise. Partnering with an established factory gives your brand immediate access to advanced engineering capabilities, such as precision CNC machining or specialized electronics assembly, without requiring you to buy the actual machinery.
Challenges of OEM manufacturing
OEMs are used by manufacturers with the resources to handle these challenges:
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High upfront costs. Because an OEM builds custom items tailored to your blueprints, you must pay for initial engineering, prototype iterations, and custom tooling or molds before mass production ever begins.
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High minimum order quantities. Factories must retool and configure their assembly lines for your specific run, meaning they often require large baseline orders to make the setup profitable for their operations.
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Extended lead times. Custom manufacturing takes time. From raw materials sourcing to shipping logistics, you must plan your inventory cycles months in advance to avoid running out of stock during peak market demand.
Alternatives to OEM and traditional manufacturing
An OEM partnership provides control over your product, but it requires significant capital. Depending on your current business model, cash flow, and development stage, alternative sourcing paths may align better with your goals.
Shopify Collective
If you want to expand your catalog without managing inventory, handling logistics, or paying upfront manufacturing fees, Shopify Collective offers an efficient path. This built-in sales channel lets you connect with other verified Shopify brands to import their existing items into your storefront. When a customer places an order, the partner brand ships the item directly to the consumer. Shopify Collective is available to eligible stores that meet the requirements.
Because you’re selling products that already exist, you skip the development, tooling, and minimum-order commitments an OEM run requires—letting you test new product categories without producing anything yourself.
Wholesalers
Buying from a traditional wholesaler lets you purchase finished goods in bulk at a discount. Unlike an OEM arrangement where you must design the item from scratch and assemble the components yourself, wholesale items are already developed, tested, and sitting in a warehouse. This lowers your lead times and upfront engineering costs, though you sacrifice custom branding and face stiffer competition from other retailers selling the exact same goods.
Dropshipping
Dropshipping removes inventory management from your daily operations. You list items on your ecommerce store, and a third-party manufacturer or supplier fulfills each order individually as it comes in. This model requires minimal capital to launch. However, it offers lower margins and limited control over shipping speeds or product quality.
What is OEM in manufacturing FAQ
What is the difference between OEM and ODM?
The difference between OEM and ODM is who owns the product design and who assembles the finished product. In an original equipment manufacturer (OEM) setup, your brand provides unique blueprints and the factory builds a component for your product to your specifications. With an original design manufacturer (ODM), the ODM designs and manufactures products that you can modify slightly, like adding a logo, before selling it under your own name.
What is the difference between a brand and an OEM?
the brand owns intellectual property handles marketing and sells items directly to customers under its name. consumers buy from while oem is business that produces parts for finished products behind scenes.
What is the difference between a manufacturer and an OEM?
All OEMs are manufacturers, but not all manufacturers are OEMs. A general manufacturer makes open-market goods, while an OEM manufactures product components for industrial buyers. In the auto repair industry, for example, OEM parts are made by the supplier the automaker chose to produce that component—built to the carmaker’s specifications, not sold as a generic part.
