How to Verify an Aluminium Pergola Manufacturer Before You Order
Almost any supplier can look like a factory on a website. The difference only becomes visible when you ask for things that a trading company cannot produce: a legal entity name, a wall thickness, a test report number, or a live camera walk-through.
This guide is the checklist we expect serious buyers to run on us. Work through it in order — the early checks are the ones that filter out most non-factories.
The 8 checks, in the order that saves you the most time
| # | Check | What a real factory shows you | Red flag |
|---|---|---|---|
| 1 | Legal entity vs trade name | A registered company name you can verify independently, plus the brand name it trades under | Only a brand name, or a name that changes between documents |
| 2 | Factory address and floor area | A specific address and a stated area | “Our factory” with no address |
| 3 | Which stages are in-house | Profiling, surface treatment and assembly all under one roof | “We work with several factories” |
| 4 | Profile drawings and wall thickness | Actual section drawings and wall thickness in mm | “Standard aluminium” with no dimensions |
| 5 | Certifications and test report numbers | A report number you can cross-check | A logo image with no number |
| 6 | Quality control stages | A defined process with named inspection points | “We check everything” |
| 7 | Export markets actually served | Named regions and shipping terms used | No export references at all |
| 8 | Minimum order and sample terms | A stated MOQ and a workable way to test first | MOQ only quoted “per container” |
Check 1 — Get the legal entity name, not the brand
A brand name is marketing. The legal entity is what appears on your contract, your bill of lading and your customs documents — and it is the only name you can verify in a company registry.
Ask: *”What is the full registered company name that will appear on the invoice and bill of lading?”*
If the answer differs from the name on their website, that is not automatically a problem — many manufacturers run a separate export brand — but you need the relationship explained before you pay a deposit.
Check 2 — Ask for the address and the floor area
A stated area in square metres is a commitment. It is also easy to sanity-check against a satellite view and a live video call.
Ask: *”What is your factory address, and how many square metres of production floor do you operate?”*
Check 3 — Separate in-house stages from outsourced stages
This is the single most useful question for judging price and lead time, because it determines who actually controls your order.
Ask: *”Which of these do you do in-house: aluminium profiling, surface treatment, and final assembly?”*
A factory that profiles, coats and assembles in-house can change a profile dimension for your programme. An assembly shop can only re-order stock sizes from a third party — which is why custom requests so often come back as “not possible” or “add six weeks”.
Check 4 — Ask for a section drawing and a wall thickness
Pergola pricing is driven almost entirely by aluminium weight, which is driven by wall thickness. Two pergolas can look identical in a photo and differ by 40% in material.
Ask: *”Send me the section drawing for the beam and the column, with the wall thickness in mm.”*
A quote that cannot be traced to a specific section drawing is not a comparable quote — and it is the most common reason a cheap first order turns into a structural problem later.
Check 5 — Ask for certificate and report numbers, not logos
Certification logos are images; anyone can place them on a page. Numbers can be checked.
Ask for: the report number, the standard it was tested against, the date of issue, and whose name is on it — supplier, component maker or the factory itself.
This distinction matters: a certificate issued to a component supplier (for example, the maker of an electric actuator) proves something about that component. It is not a statement about the finished structure. Treat the two separately when you assess a supplier.
Check 6 — Map the quality control stages
“The motor is tested” and “the finish is inspected” are not a QC system. A system has gates with a defined trigger.
Ask: *”What are your inspection stages, and what is checked at each one, and what documentation do I receive?”*
Check 7 — Check the export markets and shipping terms
Ask which regions they ship to and which shipping terms they routinely handle. A supplier with no export track record will struggle with documentation, and you will absorb that cost as delay.
Check 8 — Test with a small order before a container
The cheapest verification is a real order. If the MOQ forces you into a container-load commitment on the first purchase, you are being asked to carry all the risk of the relationship.
Ask: *”What is the minimum order for a first order, and can I ship it LCL?”*
What to request in writing — document checklist
| Document | What it proves | What to watch for |
|---|---|---|
| Registered company name and address | Who you are actually contracting with | Name mismatched to invoice or B/L |
| Factory floor area | Production capacity claim | Vague or unstated |
| Section drawings with wall thickness | Material actually quoted | No dimensions given |
| Test report number + standard + issue date | Third-party testing, and scope | Logo only; report issued to a different party |
| QC stage description | Repeatable quality process | Generic assurances |
| Reference markets and shipping terms | Export experience | No named markets |
| Written MOQ and lead time | Commercial commitment | “Negotiable” with nothing fixed |
How BROWN CARDON looks against these checks
We are a manufacturer in Chongqing, China, trading as BROWN CARDON. For buyers running the checklist above:
| Check | Our answer |
|---|---|
| Legal entity | Chongqing Aluminum Duoduo Metal Materials Co., Ltd. — trading as BROWN CARDON |
| Factory | 6,000+ m² production floor in Chongqing, China |
| In-house stages | Aluminium profiling, surface treatment and assembly — all in-house, plus product R&D and proprietary mould development |
| Frame specification | 6063-T5/T6 alloy; beam 221 × 55 mm with 2.0 mm wall; column 122.5 × 58.5 mm with 2.0 mm wall; louver blade 210 × 122.5 mm |
| Quality control | Three gates: incoming inspection of raw material, in-process sampling during production, pre-shipment final inspection |
| Certifications | EN 1090-1 / EN 1090-3 attestation no. TD21162400 covering models 173 / 180 / 220 / 221 (EU TEST); CE-certified products manufactured under an ISO 9001 quality management system. Ask us for the report numbers and their scope. |
| Export markets | North America, Europe, the South Pacific, and the Middle East; FCL and LCL, documentation and customs compliance guidance |
| First order | Minimum order quantity 1 set; lead time 15–20 days after order confirmation; plywood export crates for sea freight |
Frequently asked questions
What is the fastest way to tell a factory from a trading company?
Ask for the registered company name, the factory address, and which production stages are in-house. A trading company can answer the first quickly, but usually cannot answer the third with specifics — and cannot supply a section drawing with wall thickness in millimetres.
Should I trust a certification logo on a website?
No. Ask for the report number, the standard tested against, the issue date, and the name of the party the report was issued to. A report issued to a component supplier covers that component, not the finished structure.
Why does wall thickness matter more than the photo?
Pergola cost is driven by aluminium weight, and weight is driven by wall thickness. Two visually identical pergolas can differ by a large margin in material, which is why a quote with no section drawing is not a comparable quote.
Can I verify a factory without travelling to China?
Yes, largely. A live video call showing the profiling and assembly areas, combined with the company name, address and a sample order, answers most of the checklist. An on-site visit is best reserved for large or long-term programmes.
What should a first order look like if I am new to importing?
Keep it small enough to test the supplier’s communication, packaging and documentation. Lead time and packaging quality on a trial order tell you far more than a catalogue.
Do you allow a small first order?
Yes. Our minimum order quantity is 1 set, so a first order can be used to validate fit, finish and packaging before committing to a larger programme.
Run the checklist on us
Send your checklist and we will answer it item by item, with drawings and report numbers.
Contact: browncardon.global@gmail.com · Chongqing, China