Certificate logos are on every Chinese supplier's website and almost none of them say what the certificate covers, who it was issued to, or how you can check it. Here is a five-minute way to do all three — and the four ways a certificate is used to misplace a buyer's confidence.
Three different documents all get called “the certificate”
When a supplier says “we are certified”, they can mean three quite different things, and the difference decides whether the document is worth anything to you. Ask which one it is before you look at the pictures.
A management-system certificate — ISO 9001 (quality), ISO 14001 (environment), ISO 45001 (occupational health and safety) — is issued to a company for the way it runs its processes. It says the company documents, measures and reviews what it does. It does not say anything about the steel in your girder, and it is not a certificate for a product.
A service certification, in China the five-star GB/T 27922 assessment, rates a company's after-sales service system: response times, complaint handling, spare parts commitments. Useful when it is real, because after-sales is exactly where a distant supplier is weakest — but again, it is about the company, not the machine.
A product or type certificate is the one that attaches to hardware: a CE marking under the Machinery Directive, a national type test, or the inspection certificate issued for your crane after its load test. This is the only category that says something about a machine. If a buyer asks for “the certificate” and is shown an ISO 9001 logo, the question has not been answered.
The four lines that decide whether it means anything
Every legitimate certificate, in any country, carries the same four pieces of information. Read them in this order and a fake or misused certificate usually falls over at the second line.
1. The legal entity. Not the brand, not the website name — the registered company name and, on Chinese certificates, the unified social credit code. If the certificate names a factory in one province and the company you are buying from is a different legal entity in another, then you are looking at the factory's certificate being shown to you by a trading company. That may be perfectly honest, but the supplier should say so out loud.
2. The registration number. Every certificate has one, it is unique, and it is the thing you verify — not the JPEG. A number that cannot be found on the issuing body's own website is the end of the conversation.
3. The standard, with its year. “ISO 9001” and “ISO 9001:2015” are not the same thing: the first can be a certificate that expired in 2018. The certificate also carries the Chinese GB/T equivalent (GB/T 19001-2016, GB/T 24001-2016, GB/T 45001-2020), and a genuine certificate shows both.
4. The scope, the issue date and the expiry date. The scope is the sentence that says what the certificate covers — it deserves its own section below, because it is where most over-claiming happens. The dates matter because a surprising number of certificates on supplier websites expired years ago and were never taken down.
How to verify a certificate in five minutes
You do not need to trust the supplier's word, and you should not have to ask them for anything. Three places will settle it.
The issuing body's own register. The certificate names the certification company; most run a search box (the one on our own certificates, China Mileage International Certification, is at cmicrz.com). Enter the registration number and the company name. What comes back must match the document exactly — the name, the standard, the scope, the dates.
The national register. In China every accredited certificate is listed on the CNCA platform, cx.cnca.cn, run by the certification regulator. This is the check that survives a supplier printing a nicely designed fake: the number either exists in the state register or it does not.
The international registers, if the certificate claims accreditation: IAF CertSearch covers certificates issued under IAF-accredited bodies worldwide. Chinese management-system certificates are normally issued under CNCA accreditation rather than IAF, so a certificate that is absent from IAF CertSearch is not automatically a problem — but one that appears nowhere at all is.
Five minutes, one search box, and you have removed the single most common source of misplaced confidence in this trade. If a supplier hesitates when you ask which register to use, that hesitation is the answer.
Read the scope like a contract, not a badge
The scope line is the part of the certificate that says what it actually covers, and it is written narrowly on purpose. Two examples, both real:
“Research and development, sales and leasing of lifting equipment” — this is the scope on our own ISO 9001, ISO 14001 and ISO 45001 certificates. It covers what we do: specifying, sourcing, inspecting and exporting. It does not cover manufacturing, because we do not manufacture.
“Design and manufacture of overhead cranes and gantry cranes” — this is what a factory's certificate says. If a supplier shows you this wording, ask whose name is on the first line, and whether that company is the one issuing your invoice.
Neither wording is better. What matters is that the words and the business agree. A trading company with a sales-scope certificate is telling the truth. A supplier who introduces itself as a factory while showing a sales-scope certificate is contradicting itself in one document, and buyers who notice this rarely say so — they simply stop replying.
One more thing the scope tells you: the address. A certificate is issued to a legal entity at one registered address. If the site visit or the loading photographs come from a different province than the certificate, ask why before you pay a deposit.
Four ways certificates are used to mislead buyers
None of these are exotic. They are the four we see most often in this trade.
The expired certificate. The picture is genuine, the number is real, and the validity ran out two years ago. The supplier's site was built once and never revised. Check the dates last, and check them against today.
Someone else's certificate. A trading company shows the factory's certificate as its own. The scope and the name will not match the seller's identity. Sometimes it is carelessness; sometimes it is designed to imply the seller has a factory.
A scope that does not cover what you are buying. A certificate for “overhead cranes up to 20 t” shown to sell you a 100 t machine, or a management-system certificate offered as proof of product compliance. Both are answered by reading the scope line.
The self-certified certificate. A document that looks official, issued by a body with no accreditation, no register and no way to look up the number. If there is no third-party register, there is no verification, and an unverifiable certificate is decoration.
What actually protects your order
Certificates describe a company's system. Your risk, however, sits in one specific machine — so the paperwork that protects you is the paperwork that names that machine.
Before dispatch, ask for: the approval drawing you signed, the test report with the actual load figures and limiter settings, the product certificate for that unit with its serial number, photographs and video of the load test, the packing list against the loading plan, and the operation and maintenance manual with the electrical drawings. These travel with the crane; a management-system certificate does not.
On the commercial side, the two documents that matter most are the quotation that lists what is included and excluded, and the warranty statement with the response commitment and the spare parts list. A supplier who is vague about those two will be vague about everything else, whatever is framed on the office wall.
Read the whole sequence in our guide to buying a crane from China, or see the inspection steps we actually photograph on the projects page.
Our own certificates, as a worked example
We publish four certificates on our About page, and it is worth reading them the way this article describes, because the exercise shows both what they prove and what they do not.
They are: ISO 9001:2015 (quality management, registration 78825Q0955R0S), ISO 14001:2015 (environmental management, 78825E0956R0S), ISO 45001:2018 (occupational health and safety, 78825S0957R0S) and a GB/T 27922-2011 five-star service certification (78825ECP0954R0S for after-sales service). All four were issued by China Mileage International Certification on 18 July 2025 and run to 17 July 2028, and all four are registered to Henan Xinyida Road & Bridge Equipment Co., Ltd.
The scope printed on all four is the research, development, sale and leasing of lifting equipment — not manufacturing. We are a supplier: we specify the machine, compare the partner factories, inspect before shipment and handle the export documents. The certificate says the same thing we do on the rest of this website, which is the only real test of a certificate: it should match the business behind it.
Every registration number above can be checked on the certifier's site or in the national register before you contact us. We would rather you did.
A checklist for your own file
Copy this into the notes you keep on any supplier:
- Which category is it — management system, service, or product?
- Whose legal name is on line one, and is that the company invoicing you?
- Does the standard include a year, and is that year current?
- What exactly does the scope cover — and does it cover what you are buying?
- Issue date and expiry date, checked against today.
- Does the registration number come back from the issuer's register and from cx.cnca.cn?
- Separately: the test report and product certificate for your crane, with its serial number.
Seven lines, one afternoon of checking, and you will know more about a supplier than their website intended to tell you. If something does not match, send us the number and we will tell you honestly what we can see in it — including when the answer is that the certificate is fine and the supplier was simply careless in how they presented it.
Questions about your own project? Send the capacity, span, lifting height and duty and we will tell you honestly what we would specify — send an inquiry or message us on WhatsApp.