A hardware company spends nine months moving production of its networking equipment from Shenzhen to a contract manufacturer outside Hanoi. The tariff maths works. The unit cost holds. The first Vietnamese-built units ship to customers in the United States and the European Union, and for a quarter everything looks like a success. Then a routine customs examination in Rotterdam pulls a unit, and the compliance team discovers the product going out the door is no longer the product that was certified. Somewhere in the transfer, the new factory swapped the wireless module for one from its own supplier. The certification on file describes a device that is no longer being built.
Moving production to a new country does not, by itself, void a product certification. An FCC authorisation, a CE marking, a BIS registration, or a SABER certificate follows the product design, not the factory address. The certification breaks when the new manufacturer changes the product, and new manufacturers almost always change the product, because they re-source components from their own suppliers. That is the risk almost nobody plans for when they relocate to escape tariffs.
Put simply: product certification when moving manufacturing remains valid only while the product design and bill of materials stay unchanged. Certifications such as FCC and CE do not automatically transfer if a new factory alters components, even when the finished product looks identical.
The China Plus One shift accelerating through 2026 has made this a live problem for a growing number of hardware companies. The tariff problem and the certification problem are solved by the same decision, moving the factory, and created by the same decision. Companies focus intensely on the first and discover the second at a border. Understanding which parts of your certification travel with the design, and which parts shatter the moment a component changes, is the difference between a clean transition and a shipment sitting in bonded storage while a re-certification runs.
Does Moving Your Factory Void Your Product Certification?
The short answer is no, not on its own, and this is where a lot of relocation planning goes wrong in both directions. Some companies assume every certificate is void the moment they leave China and waste months re-testing products that did not need it. Others assume the certificates simply carry over and ship uncertified product without realising it. Both are expensive. The accurate position is more specific.
A product certification attaches to a defined product: a specific design, with a specific bill of materials, built to a specific specification, supported by a specific set of test reports. The physical location of the factory is not usually part of that definition. If the identical product is built in a different place, the certification generally remains valid. What matters is whether the product that comes off the new line is the same product that was tested. In practice, that is exactly what changes.
The Real Trigger: Your New Factory Re-Sources Components
When a contract manufacturer in Vietnam, India, or Mexico takes over production of a product previously built in China, it rarely builds it identically. Each of those markets also carries its own import and registration requirements that do not transfer from the old Chinese arrangement. It builds it with its own supply chain. The wireless module comes from a supplier the new factory already works with. The antenna is a different part. The power supply is re-sourced. A crystal or oscillator is substituted for an equivalent the factory stocks. From a production standpoint these are sensible, cost-driven decisions. From a certification standpoint, each one can be the change that breaks the certificate.
This is the mechanism that catches companies by surprise. The relocation itself is visible and planned. The component substitution is often invisible to the brand owner, made on the factory floor as a normal part of setting up a new production line, and not flagged as a regulatory event because the factory is not thinking about the brand owner’s certifications. The product still works. It still looks identical. And it is no longer the device on the certificate.
To make this concrete, consider a simplified before-and-after for a single certified product. The specifics below are illustrative rather than a real device, but the pattern is exactly what surfaces in a bill-of-materials review.
| Component | China build (certified) | New factory build | Certification impact |
|---|---|---|---|
| Wi-Fi / radio module | Module A, on the original FCC grant | Module B, the new factory’s preferred supplier | High. Different radio, likely a new FCC ID |
| Antenna | Antenna spec as tested | Equivalent part, different vendor | Medium. May need a permissive change |
| Power supply | PSU as tested for emissions | Re-sourced PSU, same rating | Medium. Emissions retest may be needed |
| Enclosure | Original tooling | New tooling, same dimensions | Low, if it does not affect emissions or exposure |
| Capacitors, passives | As tested | Equivalent parts | Usually none |
The row that matters is the first one. A different radio module is not a like-for-like swap in regulatory terms, however similar it looks on a datasheet, and it is also the component a new factory is most likely to change, because it is the part they have their own sourcing relationships for. One line in a bill of materials is the difference between shipping a certified product and shipping an uncertified one, and a component change can shift the HS classification of the finished product too.
The quick logic a compliance team can apply to any relocated product:
- Factory changes, bill of materials identical, test configuration unchanged: certification usually remains valid.
- A component that affects certified parameters changes, most importantly the radio module, antenna, power supply, PCB in the RF path, or radio firmware: certification usually needs review, and often a filing.
- The entity holding the certification changes: a formal transfer or a new filing in the new responsible party’s name is usually required.
Product Certification When Moving Manufacturing: What Actually Breaks by Market
The four certification regimes that matter most for technology hardware handle a production change differently, and the differences decide how much work a relocation creates. The matrix below is the quick answer; the notes beneath it carry the nuance a table cannot.
| Market | Certification tied to | Pure relocation, identical product | Component change in radio path | Typical re-cert time |
|---|---|---|---|---|
| US (FCC) | Product design | No new FCC ID needed | Permissive change or new authorisation | Weeks for a simple filing |
| EU (CE) | Whoever places it on the market | Documentation must still be held and correct | Significant modification can make importer the manufacturer | Varies with retest scope |
| India (BIS) | Product, manufacturer and site | New or amended registration often required | New registration plus in-country testing | Several months, no expedited path |
| Saudi Arabia (SABER) | Product and manufacturer | Certificate must match the new manufacturer | New product certificate needed first | Weeks once documentation matches |
United States (FCC). The FCC equipment authorisation rules tie authorisation to the product, not the site, so a pure relocation of an electrically identical device needs no new FCC ID. The nuance is what counts as identical: depending on how a change affects RF characteristics, emissions, or other certified parameters, a new radio module, amplifier, antenna, or a crystal that shifts the frequency range can require a permissive change or a new authorisation. Not every substitution triggers a filing, but the ones in the radio path frequently do.
European Union (CE). This is where the importer is most exposed. Conformity responsibility sits with whoever places the product on the EU market, and the importer must hold the technical documentation for ten years. Under EU guidance, a significant modification, or placing the product on the market under the importer’s own name, can make the importer the legal manufacturer, moving the whole conformity burden onto the company bringing it in.
India (BIS) and Saudi Arabia (SABER). Both tie the certificate to the specific manufacturer, so a production move hits harder than in the US. The same is true in reverse for anyone relocating into China, where CCC and SRRC approvals require in-country testing that foreign reports cannot satisfy. BIS registration is specific to the manufacturer and the site, and a new location generally means a new or amended registration with fresh in-country testing and no expedited pathway, which makes it frequently the longest pole in the tent. Under SABER, the product certificate is issued against the specific manufacturer’s test reports, so a manufacturer change means the documentation no longer matches and a new product certificate is required before shipment certificates can issue.
Relocating production and shipping into multiple regulated markets? The certification exposure is different in every one, and the party legally answerable for it at the border is the importer, not your new factory. Carra Globe acts as importer of record across 175+ countries and maps certification impact against your new bill of materials before the first shipment moves, not after a customs authority finds the gap.
What the Delay Actually Costs
The reason this is worth attention now, rather than when a shipment is held, is that the cost of getting it wrong is not really the cost of the certification. It is the cost of the delay, and the delay compounds in a way a fine never could.
Nobody outside your business can put a number on it, because it depends on your revenue per market and your contractual commitments. But the shape of it is predictable. If a required re-certification in a slow market runs three to six months, and you discover the need for it only when a shipment is examined, the launch in that market does not slip by the length of the filing. It slips by the filing time plus the time already lost, plus the time to unwind and re-book the held shipment, plus whatever penalty sits in your contract with the channel partner or end customer who was promised delivery. A compliance gap found in planning costs a filing fee and some lab time. The same gap found at a border costs a quarter.
This is why the slowest market in your footprint, not the fastest, sets your real timeline. A company shipping the same product into the US, the EU, India, and Saudi Arabia can clear the US side in weeks and still be unable to launch on schedule because the Indian re-registration behind one changed component takes months. Planning to the fast market and discovering the slow one late is the single most expensive way to run a relocation.
Why the Importer Carries This, Not the Factory
There is a structural reason this problem lands where it does. In every one of these markets, the legal responsibility for a compliant import sits with the party bringing the goods into the market, the importer of record, not the overseas factory that built them. Your old Chinese factory faced consequences for a bad export only in limited ways. Your new Vietnamese factory is in the same position. Neither is the entity a customs authority or a market surveillance body pursues when an uncertified product turns up. That is the importer, which is also why a freight forwarder cannot stand in as your importer of record: the role carries legal accountability a logistics contract does not.
This is why a relocation that looks like a purely operational decision is also a compliance decision. The company that owns the brand and imports the product owns the certification risk, regardless of which factory introduced the change. If the new plant swapped a module and nobody updated the FCC filing, it is the importer that is named on the entry when the shipment is examined. Our guide to the difference between a paper IOR and an operational IOR covers why the quality of that importing relationship determines whether a problem like this is caught before shipping or discovered at the border, and our analysis of the 2026 CBP customs audit environment sets out how much more actively these gaps are now being found.
The Relocation Compliance Sequence That Prevents This
The failure is almost always a sequencing failure. The certification review happens after the production move, when it should run alongside it. The work is not complicated, but it has to start early, because certification timelines in some markets are measured in months and cannot be compressed.
- Get the new factory’s bill of materials before the first production run, and compare it to the certified one. This single step surfaces most of the risk. Line up the new BOM against the one behind your existing certifications and identify every component that changed, with particular attention to anything in the radio path: modules, antennas, amplifiers, oscillators. A difference here is a certification event, not a procurement detail.
- Classify each change by regulatory impact, not by cost. A cheaper equivalent capacitor may be irrelevant. A different wireless module is not. For each changed component, determine whether it affects the parameters the certification depends on. This is the step that tells you whether you need a minor filing, a permissive change, or a full re-certification.
- Start the long-lead re-certifications first. If India or another slow market is in scope and a change requires re-testing, that clock is the one that will make you late. Our analysis of the compliance gaps in the shift to Vietnam, India and Mexico sets out typical reissuance timelines per market. Begin it before the Vietnamese line is even at volume.
- Confirm who legally holds the certification, and whether that entity is changing too. This is the step most likely to produce an unpleasant surprise, because certifications are often held in the name of the original manufacturing entity, sometimes the Chinese factory or a holding company, rather than the brand owner. If you are leaving that manufacturer behind, you may be leaving the grant behind with it. Some markets allow a formal transfer or a Change in ID into the new responsible party; others require a fresh filing. Establishing who owns the grant, and whether they will cooperate in transferring it, has to happen early, because it determines who can legally act as the responsible party on the import and can quietly block a launch if left unresolved.
- Lock component control into the manufacturing agreement. The durable fix is contractual. The agreement with the new factory should require written notification and approval before any component in a certified product is changed. This turns an invisible floor-level substitution into a controlled event you find out about before it ships, not after.
Frequently Asked Questions
Does moving manufacturing out of China void my FCC certification?
Not by itself. An FCC ID follows the product design, not the factory, so an identical product built in a new location keeps its authorisation. It breaks when the new factory changes a component that affects radio performance.
The practical risk is that new contract manufacturers routinely re-source modules and antennas, so verify the bill of materials rather than assuming the certification carried over.
Do I need to re-certify if I only changed the factory, not the design?
Generally no for the US if the product is genuinely electrically identical. But some markets, notably India under BIS, tie registration to the site itself, so a new location can require a new registration.
The answer depends on the specific market, so confirm each destination rather than applying one rule everywhere.
Who is liable if a relocated product ships without valid certification?
The importer of record. In every major market the legal responsibility for a compliant import sits with the party bringing the goods in, not the overseas factory. The importer named on the entry carries the exposure.
This is why the certification review is part of the importer’s due diligence, not something to leave to the factory.
How long does re-certification take after a manufacturing change?
It varies by market and change size. A US permissive change or Change in ID for an unmodified device can take a couple of weeks. A new BIS registration in India with fresh testing can run several months.
Because the slowest market sets your launch date, identify long-lead re-certifications first and start them before the new line is at volume.
Can I keep the same FCC ID after moving production?
Yes, if the product stays electrically identical. FCC rules let a grantee have the same equipment built by a second party under the existing FCC ID. The ID only changes if the product changes in a way that affects certified parameters.
Where the grantee entity changes rather than the design, a Change in ID filing handles it, usually quickly for an unmodified device.
Does a CE marking belong to the factory or the importer?
Neither, exactly. CE conformity is the responsibility of whoever places the product on the EU market. For non-EU goods that is the importer, who must hold the technical documentation and can be treated as the manufacturer.
So a CE marking does not simply travel with the factory. The obligation follows the party bringing the product into the EU.
Can contract manufacturers change certified components without telling me?
In practice, yes, unless your agreement prevents it. New factories routinely re-source modules, antennas, and power supplies from their own suppliers, and will not necessarily flag it as a regulatory event.
The fix is contractual: require written notice and approval before any component in a certified product is changed.
The move out of China solves a tariff problem cleanly and creates a certification problem quietly. The certificate does not tear up because the factory address changed. It stops matching reality the moment the new plant builds the product its own way, and it is the importer, not the factory, who answers for the gap when a shipment is examined. The companies that get through a relocation without a customs surprise are the ones that treated the certification review as part of the move itself, ran the bill-of-materials comparison before the first production run, and started the slow re-certifications while there was still time. The ones that treat it as paperwork to sort out later find out, at a border, that later was too late.
Disclaimer: This article is for informational purposes only and does not constitute legal, customs, or regulatory advice. Certification rules, permissive change thresholds, and re-registration requirements vary by product, market, and authority, and change over time. Always confirm the specific requirements for your product and destination markets with the relevant certification body or qualified counsel before relying on an existing certification for relocated production.