A trading company in China can save you weeks or cost you the difference between a factory price and a marked-up one. The line between the two is whether it is a real sourcing partner with a factory behind it, or a middleman relabeling a quote it found on a marketplace. If you are vetting one, here is the order I check things in.
Quick definitions: Sourcing agent finds and manages factories for a fee. Commission is what the middle layer keeps. Factory audit is an on-site check of the real plant. AQL is the acceptable-quality sampling plan. Golden sample is the agreed reference both sides hold. Incoterms decide who owns the goods and the risk at each leg.
Trading company vs factory vs sourcing agent
Know which one you are talking to. A factory sells its own line and guards its spec. A sourcing agent works for you and charges a transparent commission. A trading company sits in the middle: it may own a line, or it may simply broker several. None is automatically bad — a good trading company gives you one contract, one quality point, and mixed-product consolidation you would struggle to get direct. The risk is the one that will not show you the factory, because then you are paying a layer for nothing.
Red flags when vetting
A few tells show up early. They refuse a factory audit or a live video call on the line. The commission is vague or buried in the unit price. They cannot produce a golden sample you can lock. They dodge an AQL plan. Or the price moves every time you ask for a spec change, which means they are guessing at the factory, not quoting one they know. Any one of these is worth pausing; two together, walk.
How to verify the factory behind them
Ask for the business license and the plant address, then run a factory audit — your own, a third party's, or at minimum a timed video walk on the production line. Check for ISO 9001 and BSCI, and ask which export markets they already serve; a line shipping to the US or EU has already cleared those bars. Hold a golden sample and write the spec against it. A trading company confident in its factory welcomes this; one that stalls is telling you something.
Incoterms and who carries the risk
The Incoterms in the quote decide when the goods and the risk become yours. EXW means you collect from the factory gate — cheapest paper, most work. FOB means the supplier loads the vessel and risk passes at the Chinese port. CIF adds freight and insurance to your destination. Pick the term that matches how much of the chain you want to control, and make sure the trading company actually honors it rather than quietly shifting the risk back to you.
A one-page vetting checklist
| Check | What good looks like | Red flag |
|---|---|---|
| Factory access | Audit or live line video | Refuses to show the plant |
| Commission | Stated in writing | Buried in unit price |
| Golden sample | Held and referenced | Cannot produce one |
| Quality plan | AQL agreed up front | Dodges the question |
| Certifications | ISO 9001 / BSCI shown | Vague or absent |
Summary: the short version for buyers
Know whether you are dealing with a factory, a sourcing agent, or a trading company — each fits a different need.
Red flags: no factory audit, vague commission, no golden sample, no AQL plan.
Verify the plant with a license, an audit, and a timed line video; check ISO 9001 and BSCI.
Lock a golden sample and a written spec before you pay.
Pick Incoterms that match how much of the chain you want to control.
A good trading company welcomes verification; one that stalls is telling you something.
Frequently asked questions
Is a trading company more expensive than buying direct?
It can be, if it only brokers a factory you could call yourself. It pays off when it consolidates mixed products, carries one quality point, and manages export paperwork you do not want to.
How do I confirm the factory really exists?
Ask for the business license and plant address, then run a factory audit or at minimum a timed video walk on the line. Certifications like ISO 9001 and BSCI back it up.
What Incoterm is safest for a first order?
FOB is a common start: the supplier loads the vessel and risk passes at the Chinese port, so you keep control of freight while the supplier handles export. Pick the term that matches the chain you want to own.
Why does the golden sample matter so much?
It is the reference both sides hold, so every carton is judged against one object, not a memory. Without it, "same quality" becomes a negotiation every shipment.
Editorial transparency: Written by a Fujian export team that also acts as a sourcing partner for overseas buyers. The checklist reflects on-site vetting practice; adapt it to your market and volume. Last fact-checked: 2026-07-21.
