Do Staubli PV connector suppliers offer OEM services in China?

I know many buyers hope to get OEM services when they import solar connectors from China, but they often face unclear rules and mixed information from suppliers.

Stäubli does not allow OEM production or custom branding for its PV connectors in China, but some distributors can support simple packaging requests without changing the product itself.

Many buyers still want to know what level of customization is possible. I want to share what is real, what is not allowed, and how you can avoid misunderstandings that may lead to big risks in your supply chain.

Can I request connectors with custom branding¹?

Many buyers want their own brand on solar connectors, and they think Chinese suppliers can do it easily, which creates confusion.

You cannot add custom branding to genuine Stäubli² MC4 or MC4-Evo2 connectors because Stäubli does not allow any OEM or re-branding under any condition.

Why custom branding is not allowed for Stäubli connectors

I want to explain this clearly because many importers lose money due to misunderstandings about OEM rules.

1. Stäubli keeps full brand control

Stäubli owns all its factories, equipment, and tooling. The company does not allow external factories to produce its connectors, and it does not allow any re-branding. This rule protects safety, certification, and global warranty.

2. Any “OEM Stäubli MC4³” offer is a red flag

If a supplier claims they can produce “OEM Stäubli connectors,” you are not seeing genuine products. These connectors may look similar to MC4-type designs, but they cannot meet the same safety, durability, or certification levels.

3. OEM is possible only for generic MC4-type connectors⁴

Many Chinese factories produce MC4-type connectors and offer private-label services. These products are suitable only for buyers who do not require original Stäubli quality or global certification support.

Comparison Table: Genuine Stäubli vs OEM MC4-Type Alternatives

Feature	Genuine Stäubli	OEM MC4-Type from China
Branding	Fixed, cannot be changed	Fully customizable
Certification	IEC, UL, TÜV with strict traceability	Varies by factory
Warranty	Global Stäubli warranty	Supplier-specific
Safety level	Very high	Medium to high, not always stable
Risk	Very low	Depends on factory and QC

Stäubli keeps their brand closed to protect users from performance risks and counterfeit issues, so custom branding is not possible for genuine connectors.

Is Staubli open to OEM partnerships⁵?

Many buyers think Stäubli works like typical Chinese manufacturers that allow private labeling, but the reality is very different.

Stäubli does offer OEM partnerships, but only for top-tier module manufacturers and system partners who integrate original connectors⁶ without changing branding.

How Stäubli manages OEM partnerships

I want to explain how Stäubli structures its OEM model because it is not the same as private-label manufacturing.

1. OEM means “integrated supply,” not “re-branding”

Stäubli’s OEM agreements allow module manufacturers to receive original connectors directly from Stäubli for factory installation. These connectors still carry full Stäubli branding and all official certifications.

2. OEM customers must meet strict requirements⁷

Stäubli selects OEM partners based on:

• Production volume
• Engineering capability
• Long-term demand forecast
• Quality systems
• Traceability requirements

Only large module manufacturers, junction-box producers, or engineering integrators qualify.

3. No external branding or modified markings

Even under OEM agreements, Stäubli keeps its trademark and markings unchanged. This protects global traceability for safety and warranty claims.

4. OEM support includes technical engineering⁸, not re-branding

Stäubli provides:

• Connector integration support
• Testing and certification alignment
• Application engineering
• Custom solutions for mechanical environments like trackers

But the connector still remains a Stäubli connector.

Table: What OEM Means in Stäubli’s System

Item	Allowed	Not Allowed
Supply to module factories	✔	—
Engineering optimization	✔	—
Custom voltage requirements	✔	—
Re-branding	—	✘
Logo change	—	✘
Tooling modification	—	✘

Stäubli’s OEM model focuses on integration with major manufacturers, not private-label production.

What’s the MOQ for OEM labeling⁹?

This is one of the most common questions I get, because many buyers want to order small batches with their logo. I need to clarify this point very clearly.

There is no MOQ for OEM labeling of genuine Stäubli connectors because OEM labeling is not allowed at all.

Why there is no MOQ

Many buyers think Stäubli might accept small MOQs, like 1,000–5,000 sets, or even bigger orders for branding, but this misunderstanding must be corrected.

1. Stäubli does not accept OEM labels on connectors

Since custom branding is not allowed, MOQ does not exist. OEM labeling simply cannot be done.

2. Chinese factories offer OEM labels for MC4-type connectors, not Stäubli

If your supplier offers OEM labels on “Stäubli connectors,” you are being offered generic MC4-type goods. These products are not original, cannot match Stäubli’s performance, and cannot carry Stäubli’s warranty.

3. You can request special packaging through authorized distributors

Even though labeling on the connector is not possible, some authorized distributors or legitimate trading companies in China can support:

• Sub-packaging (e.g., 5 sets per bag, 10 sets per bag)
• Custom outer labels for your warehouse system
• Barcode labels
• Project batch labeling

These modifications do not affect the connector’s identity or certification.

Table: What Customization You Can and Cannot Request

Custom Request	Allowed with Genuine Stäubli?	Who Can Provide It?
OEM branding on connector	✘	No one
Custom logo	✘	No one
Custom pin color	✘	No one
Packaging repack	✔	Distributors / Traders
Outer label customization	✔	Distributors / Traders
Small MOQ for packaging	✔	Distributors / Traders
OEM for MC4-type (non-Stäubli)	✔	Chinese factories

Buyers who only need sub-packaging can work with distributors, but actual OEM labeling for genuine Stäubli is not possible.

Can I design custom packaging?

Many buyers ask if they can create their own box, their own small packaging units, or their own labels for warehouse and retail needs. I can give a clear answer.

You cannot change the factory box of genuine Stäubli connectors, but you can request custom secondary packaging¹⁰ from qualified distributors.

Why custom packaging is limited

Stäubli factories use standardized industrial packaging to maintain quality, protect product sterility, and keep batch tracking clean. Changing the official package would break the certification chain.

1. Factory packaging cannot be changed

Genuine Stäubli connectors come in sealed boxes with batch numbers, certificates, and traceability marks. These must remain intact.

2. Repackaging by distributors is allowed

Many distributors support:

• Bagging into 5–10 set units
• Adding custom stickers
• Adding QR codes
• Retail-style labeling
• Project codes or warehouse IDs

This is very common for electrical wholesalers who need retail-ready packaging.

These small packaging services do not require high MOQ and can be done even for small orders.

3. You must avoid suppliers who mix OEM packaging with fake products

Some suppliers use “custom packaging” as a way to hide counterfeit connectors. If the packaging looks too generic or lacks Stäubli documentation, you should check:

• Batch numbers
• Holographic labels
• Certificate documents
• Production serial codes

A trusted distributor¹¹ will never hide factory packaging.

Table: Packaging Options for Genuine Stäubli

Packaging Type	Allowed?	Provider
Modified factory box	✘	None
Neutral factory box	✘	None
Sub-packaging	✔	Distributors
Custom outer labels	✔	Distributors
Per-bag units	✔	Distributors
Retail-style packaging	✔	Distributors

Buyers who need easier handling can request distributor-level packaging, but not factory-level customization.

Conclusion

Stäubli does not allow OEM branding or labeling, but distributors in China can support flexible packaging without affecting authenticity or certification.