Verify the business, the manufacturing site and the proposed motor as three connected checks. A registered company may be a legitimate seller without operating the factory. A real factory may still be offering a configuration that does not match your requirements.
When searching for explosion proof motor manufacturers or suppliers, buyers can quickly collect names. The harder task is establishing who will do the work, what evidence supports the offer and who will answer when something changes.
Begin by identifying every party
Ask for the seller’s legal name, Chinese business licence, factory address and the proposed manufacturer. Compare these with the quotation and relevant product records. A difference is a question to resolve, not automatic proof of fraud.
If the seller is a trading company, ask who controls production, who holds the relevant documents and who provides warranty support. A transparent reseller can be easier to work with than a business that repeatedly claims to be the factory while refusing to identify it.
| Party or record | What to establish |
|---|---|
| Contracting seller | Legal name, quotation identity, payment instructions and contractual responsibility. |
| Manufacturer | Who produces the quoted motor and where the relevant work takes place. |
| Certificate holder | How the proposed model connects to the relevant certification documents. |
| Subcontractors | Which processes take place outside the nominated site and how they are controlled. |
| After-sales contact | Who handles technical questions, replacement parts and warranty claims. |
Look at the workshop behind the offer
An on-site visit should follow an agreed checklist. Ask to see the relevant production activities, incoming-material controls, assembly areas, inspection records and identification practices. The useful evidence is the connection between those activities and the type of motor being proposed.
Record what was observed, what was only described and what could not be checked. A clean workshop photograph does not establish production capacity, conformity or delivery reliability. If the relevant work was not taking place during the visit, say so in the report.
Ask about outside processing
Not every manufacturing process needs to be in one building. The issue is whether the supplier knows and controls its outsourced work. Ask which operations are subcontracted, how specifications are issued and how returned work is accepted.
Then ask what happens if the nominated subcontractor changes. A useful purchasing agreement defines which changes require notification or buyer approval. “Our partner handles it” is a starting point for questions, not a completed control plan.
Verify the product claim separately
For IECEx claims, the official IECEx equipment FAQ explains why the current online certificate record matters. Match the proposed model and relevant scope rather than accepting a collection of unrelated certificate images.
A supplier visit should not be advertised as a certification audit. Its purpose is to gather defined purchasing evidence and report gaps. Where conformity interpretation or specialist testing is needed, identify the qualified reviewer or provider and agree that work separately.
| Area | Evidence to request or record | Limitation to state |
|---|---|---|
| Production | Relevant processes, work stages and product identification | What was not running or accessible. |
| Quality records | Examples of incoming, in-process and final checks | Whether records relate to the proposed configuration. |
| Traceability | How units, records and order references are linked | Which links could not be demonstrated. |
| Delivery planning | Material status, production milestones and responsible contacts | Unconfirmed dependencies or dates. |
| Problem handling | How a discrepancy is recorded, assigned and closed | Actions still awaiting evidence. |
Check how the supplier handles an uncomfortable question
Send a short list of meaningful questions before committing: who approves a component substitution, which documents accompany the shipment, and what happens if inspection finds a mismatch? Evaluate the answers for clarity and ownership.
A professional response does not need to promise perfection. It should identify the person responsible, the evidence available and the next action. Repeated evasive answers are more informative than another attractive brochure.
Use purchasing milestones to preserve control
Keep supplier selection, technical approval, production release and shipment release as distinct decisions. Passing an initial business check does not automatically approve the product. A successful sample or first unit does not remove the need to define the order’s inspection and records.
Our supplier verification support can be scoped around the questions you need answered. If a visit is needed, define the site, observations, report and follow-up before booking travel. See our published service fees and task boundaries when selecting a starting task.
Frequently asked questions
Should I reject every trading company?
No. Identify the actual manufacturer and define the seller’s responsibilities. Transparency, evidence and follow-through matter more than the label alone.
Can a factory visit prove certification compliance?
No. An agreed visit can collect and compare evidence. Certification assessment and technical acceptance require the appropriate competent parties.
What should a verification report show?
It should separate verified records, direct observations, supplier statements, unresolved questions and recommended next steps.
Do I need to inspect every process?
Define the scope around the risks and decisions in your order. Record exclusions and arrange specialist work where the ordinary visit cannot answer a critical question.
Bryan’s Perspective
Someone being present changes what can be seen and asked, but presence alone is not enough. The value comes from noticing a discrepancy, asking who owns it and returning to check the answer. To me, being entrusted with a buyer’s task means reporting what is missing as clearly as what looks good.
Want someone in China to follow up with the factory?
Global China Bridge supports overseas buyers with manufacturer searches, supplier verification, agreed factory visits, production coordination and quality follow-up in China. We help turn supplier promises into records, questions and actions that you can review.
Contact service@globalchinabridge.com, or tell us about your project. An initial conversation is free; any paid work starts with an agreed scope.
Related reading
Check motor certificates before ordering · Prepare a comparable motor enquiry
Updated: October 25, 2026