Trade Assurance will not enforce a claim you never wrote into the order.

1. Where the claim has to live

Platform chat is evidence of a conversation. A listing is evidence of an advertisement. Neither is reliably evidence of what you contracted for. A dispute reads the order first, and if the order says only "1 x machine, USD 4,000", then a machine was delivered and the order was performed.

So the rule is simple and slightly tedious: anything you would open a dispute about has to appear in the order itself, in the product description or in a specification sheet the order references. If a seller will not put a number into the contract that they were happy to put into the chat, you have learned something important and it cost you nothing to find out.

2. Turn each claim into a measurement

A claim becomes enforceable when a stranger could test it and reach the same answer you would. That takes four things, and a missing one is usually what sinks a case:

• A number and a unit. Not "high speed" or "professional quality" — the figure, in the unit.
• A method. Measured how, on what material, at which setting, over how long. A throughput figure taken in the fastest draft mode is not the same figure as one taken at the quality setting you intend to use, and the same seller can honestly quote either.
• A tolerance. What counts as a pass. "Within 10 percent of the stated rate" is a specification. "As advertised" is an argument.
• Who measures, and when. Before shipment, at the factory, by a named third party, with the report sent to you.

Illustratively: "printer, high speed, as per listing" gives a dispute nothing to act on. "Throughput not less than 8 m2/h measured in 4-pass mode on the supplied substrate, verified at final inspection, report to buyer" is a term. Same machine, same seller, completely different dispute.

This is also the honest reason to be specific rather than adversarial about it. A seller who genuinely meets the number loses nothing by writing it down.

3. Make the approved sample the production standard

Where quality is easier to recognise than to describe — fabric hand, stitching, finish, colour, fit — stop trying to write the specification and use a sample instead. Approve one, photograph it from every angle, keep it, and write into the order that production must match the approved sample, identified by date and by a reference you both use.

Two practical points. Colour drifts between batches and between screens, so name a colour standard rather than "same as the picture". And keep your retained sample sealed and untouched, because its entire value is being the version nobody could have altered after the argument started.

4. Book the inspection before the balance

The leverage in one of these orders is the unpaid balance. Once it is paid you are asking for a refund; before it is paid you are declining to release funds. Structure the order so a third-party inspection happens while the balance is still outstanding, and put that sequence in the contract: inspection passes, then balance, then shipment.

Two things worth knowing. An inspection is only as good as its checklist, and the checklist should be the measurements from step 2 rather than a generic quality sweep. And if a seller who was relaxed about the order suddenly pushes to cancel or postpone a booked inspection, that is not a scheduling problem. It is information, and it arrives at the one moment you can still act on it.

5. What Trade Assurance actually compares

Trade Assurance is a platform process for orders placed and paid through the platform, and it compares what arrived against what the order said. That framing explains most of the outcomes buyers find surprising:

• Money that left by direct bank transfer arranged outside the platform is generally outside the process, however the payment details reached you.
• A quality argument with no written standard tends to resolve as a negotiation rather than a finding, because there is nothing objective to find against.
• Timers matter more than merits. Confirmation and protection windows keep running whether or not the seller is still promising to fix things, and a case is much weaker after a window closes than a week before it.

None of that makes it useless. It makes it a process that rewards the buyer who wrote things down, which is the buyer this guide is trying to create.

What none of this prevents

Written terms do not stop a supplier from shipping something that misses them. They change what happens next: with a measurement, a tolerance and an inspection report you are presenting a finding, and without them you are presenting a complaint. That is a real difference, and it is not the same thing as protection.

Nothing here is legal advice, platform rules change, and any process described may work differently on your order. Read the current terms on the platform you are actually using, and where the amount at stake justifies it, take proper advice.