How to Verify a Chinese Aluminium Extrusion Factory's ISO Certificate
Check an ISO claim on a Chinese aluminium extrusion factory with six fields: holder, issuing body, certificate number, scope, expiry, and the day you checked. When two public sources disagree, keep both.
- ›Treat an ISO 9001 claim as checkable only when you can record the holder, the issuing body, the certificate number, the scope, the expiry, and the date you checked a public source.
- ›A page that only says “ISO 9001 certified” is not that chain. The standard name alone is not a certificate you can look up.
- ›Where a public Chinese certification directory applies, look up the number together with the holder. This page does not embed that lookup.
- ›If two public sources disagree, keep both lines, each with the source name and the day you read it. Do not drop the less convenient line.
- ›Company identity (the USCC on the public company registry) is a separate check from the certificate chain.
What makes an ISO claim checkable
Overseas buyers often see “ISO 9001” on a Chinese aluminium extrusion page and treat the words as the certificate. The words name a standard. They do not identify a holder, a body, a number, a scope, or a date.
Copy six fields into your own notes before you treat the claim as something you can confirm or contradict. This page is that copy list. It is not a search box, and it does not tell you that any named mill has passed a check.
Six fields to record
A claim is checkable when every row has a value you can read off a certificate or a public directory entry.
| Field | Record this | Not enough |
|---|---|---|
| Holder | Legal name of the entity named on the certificate | A brand nickname with no legal entity |
| Issuing body | The certification body named on the certificate | The standard name alone |
| Certificate number | The number you can look up with the holder | No number |
| Scope | The scope text printed on the certificate | A slogan such as “quality assured” |
| Expiry | The valid-until date | No date |
| Checked date | The day you read a public source, and that source's name | An undated screenshot |
Full chain before a certificate is shown as held. A name-only line is not shown as a held certificate.
〔example〕 filled chain
Shape only. These cells are not a live certificate and not a supplier on this site.
| Field | 〔example〕 entry |
|---|---|
| Holder | 〔example legal name〕 |
| Issuing body | 〔example certification body〕 |
| Certificate number | 〔example〕 |
| Scope | 〔example〕 aluminium extrusion profiles |
| Expiry | 〔example date〕 |
| Checked date | 〔example date〕, via a public Chinese certification directory |
〔example〕 placeholders. Do not copy them into a contract or a compare sheet as if they were issued.
When two sources disagree, keep both
Same illustrative holder, two different numbers. Neither row is dropped.
| Kept line | Source name | Holder | Certificate number | Expiry | Checked date |
|---|---|---|---|---|---|
| Kept | 〔example〕 public certification directory | 〔example legal name〕 | 〔example number A〕 | 〔example date〕 | 〔example date A〕 |
| Kept | 〔example〕 supplier webpage | 〔example legal name〕 | 〔example number B〕 | 〔example date〕 | 〔example date B〕 |
Both lines stay, with the source name and the day each was read. This page does not keep only the webpage version.
What this check is not
It does not prove the goods, the plant, or the contract party. Identity is the other page: legal name and USCC on the public company registry. Use that guide for who you would pay. Use this one for whether an ISO line can be looked up.
If the page shows only the standard name, stop. The certificate block stays off until the chain is there. Asking a supplier for the six fields is a normal buyer question. It is not a finding that the plant failed a check, and it is not an order of suppliers.
Frequently asked questions
The page says ISO 9001. Is that enough?
No. You need the holder, the issuing body, the certificate number, the scope, the expiry, and the date you checked a public source. Without a number and an expiry you cannot look the claim up. The standard name alone is not shown as a held certificate.
What do I copy from the supplier?
The legal holder name, the issuing body, the certificate number, the scope text, the expiry, and the day you checked a public source. Where a public Chinese certification directory applies, look up the number together with the holder. This site does not run that lookup for you.
Two public sources disagree. Which line do I keep?
Keep both. Write the source name and the checked date on each line. Do not silently keep the prettier line, and do not keep only the version on the supplier's website.
This guide is written from public standards and industry-common knowledge, not supplier claims. Confirm system series, test reports, prices and certifications directly with the supplier via RFQ.
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