China Private Label & OEM — Electronics Manufacturing

Private label is where most Amazon sellers get burned. The factory sends you a CAD file and expects you to manage tooling rounds, sample feedback, and regulatory compliance in a language you don’t speak, across a 7-hour time difference. If you’re new to the concept, our overview of private label electronics manufacturing in China covers the fundamentals — OEM vs ODM, tooling costs, and regulatory requirements for EU and US markets. We handle private label projects across consumer electronics and smart home categories. In one Amazon seller project, a seller moved from a generic public-mold IoT sensor to a branded private-mold product, ultimately reaching 4.6★ on Amazon within two product cycles.

We manage that entire process end-to-end.

What Private Label Actually Involves

Mold development — If your product requires custom enclosures or parts, molds are expensive ($3,000–30,000) and slow (4–8 weeks per revision). We manage T1, T2, T3 sample rounds, provide structured feedback to the factory in Chinese, and document approval criteria so nothing gets lost in translation.

Packaging — We coordinate with your designer or the factory’s in-house team to produce packaging that passes Amazon FBA requirements, EU regulation labeling requirements, and looks professional. We check bleed, color profiles, language accuracy, and required regulatory symbols before print approval.

Regulatory marking — CE, FCC, RoHS, UKCA, and increasingly EU Radio Equipment Directive (RED) are non-negotiable for most electronics in Europe and North America. We verify the factory has completed the required testing (or help you source a qualified lab), and check that all markings are correct on the final sample.

Production documentation — Before first production run, we create a golden sample kit: approved sample, defect library with photos, and a written standard that the QC team uses for every shipment. This eliminates subjective interpretation of “acceptable quality.”

OEM vs ODM: Which One You Actually Need

Most buyers say “private label” when they mean ODM. The distinction matters.

True OEM: you own the design files, you provide detailed engineering drawings, the factory manufactures to your spec. You control everything — and you pay for everything. Engineering, tooling, testing.

ODM: the factory already has a base product (a reference design for a Bluetooth speaker, a smartwatch, a sensor module). You customize it — logo, color, packaging, minor feature changes within what the design supports. You get to market faster, at lower cost, with less engineering risk.

ODM is the right call for most first products. A hardware startup getting 500 units of a custom Bluetooth speaker ODM from a Shenzhen factory is a different conversation than an established brand commissioning a fully bespoke industrial IoT gateway.

Honest limitation: ODM restricts how differentiated your product can be. If a competing brand is working with the same factory on the same base design, your differentiation is mostly cosmetic. That’s fine for some categories and a real problem in others. We’ll tell you if it’s a problem for your category before you commit.

Mold and Tooling

Plastic injection molds for electronics enclosures cost $3,000–$25,000 depending on complexity — number of cavities, material, side actions, surface finish. A simple two-part enclosure for a small sensor is on the low end. A multi-piece enclosure with living hinges and fine surface texture for a consumer product is on the high end.

The sample timeline: T1 samples typically arrive 3–5 weeks after mold steel is cut. You review, provide feedback, and the factory makes corrections for T2. Complex products sometimes need T3. We document each round in writing — with annotated photos and Chinese-language feedback to the tooling team — to prevent corrections from getting lost or misinterpreted.

Material matters for longevity. Steel molds last 300,000+ shots. Aluminum molds cost roughly 40% less but last around 50,000 shots. For a product with a 500-unit first order and uncertain future volume, aluminum makes sense. For a product you expect to run at 5,000 units per year for three years, steel is cheaper over the product’s life.

Packaging Coordination

Packaging is consistently underspecified by buyers. We manage: dieline approval, print file review (color profiles, bleed, resolution), barcode and UPC placement, required regulatory markings on the outer box (CE mark, FCC ID, RoHS symbol, WEEE symbol for EU), and multilingual insert production.

The most common mistake: buyers specify the product in detail and forget to specify inner packaging. Factories default to plain white cardboard trays or no inner packaging at all. That’s fine for shipping to a warehouse; it’s not fine for retail or Amazon FBA. We flag this at the start of the project, not at final inspection.

For Amazon sellers specifically: FNSKU labeling, suffocation warning placement on poly bags, and carton dimensions that fit within FBA inbound requirements all need to be correct before production begins. Changes after samples are approved cost real money. For a broader view of the full Amazon-to-China supply chain, see our guide to Amazon FBA electronics sourcing from China.

IP Protection

The risk with private label is that your product design walks out the factory door after production. We take three steps to reduce that risk:

1. Register your design before showing factories. China’s IP office (CNIPA) processes design patent applications. Having a filing date before you approach factories establishes priority. This matters if a dispute ever reaches a Chinese court.

2. NNN agreement, not just NDA. A Western-style non-disclosure agreement is difficult to enforce in China. An NNN agreement (Non-disclosure, Non-use, Non-circumvention) is specifically structured for Chinese jurisdiction and addresses the three actual risks: the factory leaking your spec, using it themselves, and going around you to your customers. We use a standard NNN template that has been tested in Chinese courts.

3. Split the BOM for complex products. If your product has a genuinely novel element — a unique PCB design, a proprietary algorithm — consider sourcing that component from a separate factory that doesn’t see the full product. This isn’t always practical, but for products with a real moat, it’s worth the added logistics complexity.

For an example of how we managed IP protection alongside full mold development and CE/FCC certification on a consumer product, see the EU startup Bluetooth speaker case.

Private label orders also need stricter incoming inspection than standard reorders — tooling drift between T3 approval and production is common. We recommend adding pre-production inspection to any private label engagement.