When goods from China arrive defective, stop selling them, document the problem with photos, counts and carton labels, and notify the supplier in writing quickly. Compare the defects with your purchase order and approved sample, then negotiate a remedy: replacement, repair, a refund, a discount or credit on the next order. If you paid through Alibaba.com Trade Assurance, open a dispute within the refund window. If the damage happened in transit, claim against cargo insurance or the carrier instead.
Finding defects after the goods have crossed an ocean is stressful, and the supplier is thousands of kilometers away with your money already in their account. Your leverage is lower than before shipment, but it is not zero: evidence, clear contract terms, an ongoing relationship and platform or insurance claims all give you options.
This guide walks through the steps in order, from the first hour after you open the cartons to preventing the same problem on the next order.
The quality of your evidence decides most of what follows. Before you sell, rework or throw away anything, record the problem thoroughly and keep the goods in the condition they arrived.
Collect:
Photos and video of the cartons as delivered, including shipping marks, carton labels and any outer damage.
Photos of each defect type next to a ruler or reference object, and side by side with the approved sample if you have one.
A defect count. Inspect a random sample from different cartons and record how many units have each defect. Using the same approach as an AQL inspection (random sample, defects classified as critical, major and minor) makes your numbers harder to dispute. See AQL explained.
Batch identifiers: production date codes, lot numbers and carton numbers where the defects cluster.
Keep defective units aside rather than disposing of them; the supplier, a platform or an insurer may ask to see them or request an independent inspection.
Step 2: Decide whether it is supplier fault or transit damage#
Who you claim against depends on when the problem happened. Getting this wrong wastes time, because an insurer will reject a manufacturing defect and a supplier will reject crushed cartons.
Sign
Likely cause
Claim against
Wrong material, color, size or function across many units
Manufacturing or specification error
Supplier
Defects inside undamaged, sealed cartons
Manufacturing or packing at factory
Supplier
Crushed, wet or torn cartons with damaged contents
For transit damage, time limits are short. Under the Hague-Visby Rules, which apply to many sea shipments, written notice of loss or damage should be given to the carrier at delivery, or within three days if the damage was not apparent, and a suit against the carrier must generally be brought within one year. Note visible damage on the delivery receipt, tell your forwarder and insurer immediately, and follow the claims procedure in your cargo policy. Minimum-level cover such as Institute Cargo Clauses (C), the default under CIF, insures only named major casualties; see CIF vs FOB.
Your purchase order, the approved sample and the written specifications are the yardstick. Pull them out before you contact the supplier, so your complaint is about a deviation from an agreed standard rather than an opinion.
Check:
Specifications and tolerances the product fails to meet.
The approved or golden sample and any photos of it.
Inspection results: if a pre-shipment inspection passed, compare its report with what you found; the problem may be outside the inspection scope or hidden defects the sample did not catch.
Warranty, defect and remedy clauses, including who pays for replacements and freight.
Governing law and dispute clauses. Both China and the United States are contracting states to the UN Convention on Contracts for the International Sale of Goods (CISG), which can apply to cross-border B2B sales unless the contract excludes it. Under its Article 39, a buyer who does not give notice specifying the defect within a reasonable time after discovering it can lose the right to rely on it, with an outer limit of two years from handover.
This is general information, not legal advice. For high-value disputes, talk to a lawyer who handles international trade.
Most defect cases are settled by negotiation, and suppliers who want repeat business usually engage when you present clear evidence. Send one organized written notice rather than a stream of messages.
A good notice includes the PO number, a short description of each defect, the defect count and sample size, photos, the specification or sample it deviates from, and the remedy you propose with a deadline for a reply. Keep the tone factual.
Common remedies to propose:
Discount or credit on the next order. Easy for the supplier to accept because no cash leaves their account now. Only useful if you plan to reorder, so get the credit amount in writing.
Partial refund for the defective proportion, sometimes plus your costs for sorting.
Replacement units shipped with the next order or by express, at the supplier's cost.
Local rework or repair at the supplier's expense, where defects are fixable.
Full refund or return, usually only for serious or safety-related defects, and often impractical because of return freight costs.
If the supplier stalls, keep negotiating in writing and set deadlines. Mention any unpaid balance, planned reorders or platform dispute options factually rather than as threats.
Risk
Do not sell products with critical defects
If a defect could injure someone or breaks a legal requirement, such as missing warnings, electrical faults or choking hazards in toys, do not sell the affected goods while you negotiate. Check whether you have reporting obligations to your market's product safety authority.
Step 5: Use Trade Assurance or your payment provider#
If you paid for the order through Alibaba.com, Trade Assurance gives you a formal route when negotiation fails. As of September 2026, Alibaba's money-back policy covers orders that arrive defective, incorrect or damaged, and standard buyers can request a refund within 30 days of the delivery date (60 days for Enterprise tiers). The online order and your chat records on the platform are the basis of the decision, which is why specifications belong in the order itself. See how Alibaba Trade Assurance works.
Payments made by direct bank transfer outside the platform have no equivalent process. That is one reason to structure future orders so the balance is paid only after inspection; see how to pay Chinese suppliers.
A defect case is expensive information about where your process has gaps. Use it:
Write a tighter specification covering the exact defect you found, with measurable tolerances and photos.
Seal a golden sample at the factory and keep a matching one yourself.
Book a pre-shipment inspection with a checklist that tests the failure you experienced, using the pre-shipment inspection checklist as a base.
Add a during-production inspection if defects appear early in production, such as materials or components.
Tie the balance payment to a passed inspection and put remedy terms (replacement, refund, who pays freight and re-inspection) into your purchase order.
Reconsider the supplier if they refused reasonable remedies or the defect points to weak process control.
Frequently asked questions
How quickly do I need to tell the supplier about defects?+−
As fast as you can, in writing. Platform windows can be short (Alibaba.com's standard Trade Assurance refund window is 30 days from delivery as of September 2026), and under the CISG a buyer who does not give notice within a reasonable time can lose the right to rely on the defect.
Should I send defective goods back to China?+−
Usually not. Return freight and re-import paperwork often cost more than the goods are worth, so most settlements are a partial refund, a discount or credit on the next order, or local rework. Return only when the value justifies it and the supplier agrees in writing to pay.
Can I claim on cargo insurance for manufacturing defects?+−
No. Cargo insurance covers loss or damage during transport from insured perils. Manufacturing defects that existed before shipment are the supplier's responsibility, so your claim is against them.
Guides are researched and written by sourcing and logistics editors who work day to day with factories, QC inspectors and freight forwarders in Yiwu, Zhejiang. Every guide cites its sources and is reviewed when rules or prices change.