The factory's warranty ended at shipment. Yours still has a year to run
Negotiating warranty terms with Chinese factories - warranty periods and start dates, how a warranty differs from inspection and quality deposits, claim response times and repair, replace or refund clauses, who pays, and sample contract wording

Hello, this is GreenFrog Seoul.

Nine months after you launch a rechargeable small appliance, your customer service inbox starts filling up. Units won't charge. Batteries die within an hour. Your product page promises a one-year warranty, so you owe these customers replacements. You send the factory photos and ask for replacement units, and the reply comes back: "Our warranty is 12 months from the shipment date. This lot shipped last November, so the warranty expires this month."

The proforma invoice did say "Warranty: 1 year." What it didn't say was when that year started, whether the factory would send finished units or just parts, who would pay freight, or how fast the factory had to respond. In the end the importer paid for most of the remaining replacements out of its own pocket.

The factory didn't lie. It read a one-line promise in the way that suited it best, which is what anyone would do with a one-line promise. The real problem was that "1-year warranty" was a headline, not a set of terms. This article is about what belongs under that headline and how to negotiate it.

We have already covered quality from several angles, so here is where this piece fits. Defect standards, inspection and acceptance are covered in the quality agreement guide in Episode 103. Holding back part of the balance as leverage is Episode 110, and the claim dispute process is Episode 36. This one deals with what comes after all of that: once the goods are in your customers' hands, what the factory owes you, for how long, and how fast.

In warranty disputes we see far more contracts with a one-line warranty than contracts with no warranty at all. Period, start date, scope, remedy, response time, cost. Leave any one of these six blank and the factory will fill it in its own favour.

1. Inspection, quality deposits and warranties cover different stretches of time

When we bring up warranty terms, importers often ask why they need one when they already run pre-shipment inspections and hold back a quality deposit. The three tools don't replace each other. Each one covers a different stretch of time.

The warranty covers the longest stretch of the three, and it is also the weakest. By the time it kicks in, you have paid in full and the deposit has usually been released. All you have left is the wording of the contract and whatever orders you plan to place next. With a warranty, the wording is your leverage.

People often confuse warranties and quality deposits, so it is worth being precise. A deposit is money you can deduct from if something goes wrong. A warranty is a promise about what the factory will do if something goes wrong. Without a warranty, you have no basis to claim for defects that appear after the deposit is released. Without money held back, you have little to press with when the factory drags its feet on the warranty. How to design the two together is covered in Episode 110.

2. How long should the warranty be?

There is no single right answer, but each product category has its own norms. You need to know them before you negotiate, or you can't tell whether the factory's offer is stingy or fair.

Start from the warranty you give your own customers. If you sell with a one-year warranty, the factory's warranty has to back that year all the way to the end. This is where most importers miss the start date.

The start date matters more than the length

Factories assume the warranty runs from the ex-works date or the bill of lading date. Your warranty to customers starts on the day of sale. The factory's warranty ends earlier than yours by exactly the gap between those two dates.

In this example you carry the warranty alone for four months. For slow-moving stock the gap stretches to six or eight. The usual fix is to tie the two dates together: "18 months from the shipment date or 12 months from the date of sale to the end user, whichever comes first." The factory knows its exposure has a hard ceiling, and you get room to cover the time your stock sits on the shelf.

3. What is covered and what is excluded

Almost every warranty clause a factory sends you promises freedom from "defects in materials and workmanship" and then adds a long list of exclusions. Exclusions are fair in themselves. A factory shouldn't pay for a unit a customer dropped on a tiled floor. The trouble starts when the exclusions are written so broadly that genuine manufacturing defects slip through too.

Design defects cause the most arguments. If you are selling an ODM product, meaning the factory's existing model with your logo on it, the factory did the design, so design defects naturally belong in the warranty. If it is an OEM product built to your drawings, design defects are yours. But if the factory suggested swapping a part or material to save cost and you approved it, make sure defects caused by that change don't get pushed back onto you.

Add "failure to meet specification" to the scope as well. That covers units that haven't broken but fall short of the performance on your spec sheet: battery capacity, waterproof rating, noise level. Without it, the factory can say, "It isn't broken, so it isn't a warranty issue." How to write a spec sheet that can serve as this kind of benchmark is covered in Episode 59.

4. Repair, replace or refund: who chooses?

Once a defect is confirmed as covered, the next question is what the factory actually does about it. Contracts usually say "repair or replace" and leave it there. In practice there are about five remedies, and they carry very different weight.

Most of the factory's preferred remedies assume there will be a next order. That is fine while business is flowing, but the moments you really need a warranty tend to be when the relationship is souring or winding down. Two lines in the clause handle this.

First, give yourself the choice of remedy. Instead of "the supplier shall repair or replace," write "the supplier shall, at the buyer's option, do one of the following." When you are in a hurry, you can pick replacement units by air. Second, add a conversion clause for the end of the relationship: claims arising after the last order, or after the contract ends, are settled in cash rather than credit.

5. A warranty without response times is not a warranty

Response times are the part of a warranty clause most often left out. Without them, a factory can reply "we are checking" for weeks while your customers lose patience and ask for refunds. Break the process into steps and put a deadline on each one.

Deadlines on their own change nothing if the factory misses them. You need to say what happens when it does. The most effective tool is a deemed acceptance clause: "If the supplier does not reply in writing within the step 3 deadline, the claim is deemed accepted as covered." That one sentence cuts down "we are checking" dramatically.

Keep the evidence requirements realistic too. Factories often ask for failed units to be sent back. Shipping a few-dollar product back to China one unit at a time costs more than the product. For items below an agreed unit price, let photos, video and a destruction certificate stand in for returns, and send back a handful of representative samples, at the factory's cost, only when root cause analysis truly needs them. How to build evidence when filing a claim is covered in Episode 36.

6. Who pays for warranty costs?

Every factory says it will take responsibility for defects. When you actually file a claim, you often find that "responsibility" means the cost of the replacement unit and nothing else. Break warranty cost down line by line and you can see where the money leaks.

The bottom three lines are usually the biggest in money terms. Even if the replacement costs the factory five dollars, collecting the faulty unit, sending a new one, and paying staff to handle and check it can easily add up to ten or fifteen dollars per case. If the factory only covers its own unit cost, it often pays less than half of what the warranty actually costs you.

Three ways to structure the money

Once you've decided who pays for what, you need to decide how the money moves. There are three common approaches.

For small and mid-sized importers we recommend a fixed allowance as the base, switching to actual cost above an agreed defect rate. Everyday low-level failures are absorbed quietly by the allowance, and in a year when defects break through the threshold, the factory pays the excess at cost. The factory gets predictable costs in normal years, and you are protected in a bad one.

7. Epidemic failure clauses: the incident a normal warranty can't handle

A warranty clause usually assumes units fail one at a time. The big losses come when a single cause spreads across an entire lot: a cheaper capacitor, a glue curing process that drifted for a season, a new battery cell supplier. These defects surface a few at a time over months, and if you handle them as individual claims, units that fall outside the warranty period keep turning up.

This is what an epidemic failure clause is for. If defects from the same cause exceed a set share of a lot (say 2-3%), the factory takes responsibility for the whole lot, separately from individual warranty claims. That covers full inspection, preventive replacement, customer notices and recall logistics. The key point is that for an epidemic lot, even units past their individual warranty period are included.

If the problem turns into a safety issue that calls for a recall, the stakes are higher still. An importer's legal liability is covered in Episode 53, and sharing recall costs with the factory in Episode 103. The epidemic failure clause sits one step earlier: no safety hazard, but so many failures that you can't keep selling.

8. Sample contract clauses

Here is how the points above look as contract wording. They belong in your master agreement or quality agreement. If that isn't possible, you can add a line to your purchase order saying "warranty terms are as set out in the attached schedule" and attach them. For the structure of an OEM contract as a whole, see Episode 12.

Sample clause (period and scope)
The Supplier warrants that the products supplied under this Agreement shall be free from defects in materials and workmanship and shall meet the performance set out in the agreed specification until eighteen (18) months from the date of shipment or twelve (12) months from the date of sale to the end user, whichever comes first. A battery whose capacity falls below 80% of its rated capacity within that period shall be deemed defective. Consumables are limited to the parts listed in the attached schedule. Damage caused by misuse, modification or accident is excluded, and the burden of proving such cause rests with the Supplier.

Sample clause (remedies and response times)
Where a covered defect is confirmed, the Supplier shall, at the Buyer's option, (1) supply replacement parts free of charge, (2) replace the finished product free of charge, (3) issue a credit note, or (4) reimburse repair costs according to the agreed rate card. The Supplier shall acknowledge a claim within two (2) business days of receipt and reply in writing with its root cause analysis within ten (10) business days; if no reply is given within that period, the claim shall be deemed accepted as covered. Replacement parts shall be shipped at the Supplier's cost within fifteen (15) days and finished products within thirty (30) days of acceptance. Claims arising after termination of this Agreement shall be settled in cash at the Buyer's request.

Sample clause (epidemic failure)
Where defects arising from the same cause occur in 3% or more of the quantity shipped from the same production lot, this shall constitute an epidemic failure, and the Supplier shall bear the cost of inspection, preventive replacement, collection and reshipment for the entire lot, whether or not the individual warranty periods have expired. Where the Supplier has changed the supplier, material or specification of a key component without the Buyer's prior written approval, any defect in the affected lot shall constitute an epidemic failure regardless of the rate of occurrence.

Contracts with Chinese factories often come with a Chinese version, so match the terms carefully. The warranty period is 质保期 (zhìbǎoqī). Keep the start dates distinct: "自出货之日起" means from the shipment date, while "自终端销售之日起" means from the date of sale to the end user. Also add a line saying which language version prevails if the two are read differently.

9. Negotiation tips and common traps

Lead with the start date and remedies, not the length

Ask for a two-year warranty and the factory will either raise the price or say no. Suggest keeping 12 months but moving the start date to the date of sale, capped at 18 months from shipment, and you are far more likely to get a yes, because the factory can see exactly where its exposure ends. What most importers need is not a longer warranty but one without gaps.

Put a number on the factory's risk

The main reason factories refuse to extend warranties is that they can't estimate what it will cost them. If you have defect data from past orders, bring it. "Over the last year the in-use failure rate was 0.6%. Moving to a date-of-sale start adds about 0.2% of order value." Once you show the maths, a vague demand becomes a conversation about specific numbers. Why keeping defect records builds leverage is also discussed in Episode 55.

Decide in advance what you will give

Better warranty terms usually cost you something in return. The usual trade-offs are an annual volume commitment, a small improvement in payment terms such as a lower deposit, or accepting a modest price increase. Walk in without deciding which of these you'll offer and how far you'll go, and you'll end up accepting whatever price increase the factory proposes. Using payment terms as a bargaining chip is covered in Episode 106.

Before the first order, or at the latest when volume goes up

Warranty terms are easiest to settle before the first order. If you are already trading, raise them when you are increasing volume or renewing an annual agreement. Try to change the clause after a defect has blown up, and the factory will read it as an attack tied to the current claim and insist the new terms don't apply to the lot in question.

10. Three real cases

These are anonymised versions of situations we see often in consulting. Figures and timelines are illustrative.

Case 1 — A five-month gap created by the start date

The importer sold cordless vacuum cleaners online. The factory warranty was "12 months from shipment" and the consumer warranty was one year. The importer had stocked up heavily for peak season, so the average sale came five months after shipment.

When motor noise complaints started climbing in the eighth month of sales, more than half the affected units were already outside the factory warranty counted from shipment. The factory offered parts only for units still in warranty, and the importer paid for the rest. In the next contract, the importer changed the term to "18 months from shipment or 12 months from sale, whichever comes first." The number of months barely moved, but one line about the start date closed a five-month gap.

Case 2 — "We will replace them" meant the next order

The importer brought in LED desk lamps. Four months into sales, about 300 units had faulty switches, and the factory readily agreed to replace them. The replacements, it said, would go in the next order, which was three months away.

Customers didn't wait three months. The importer refunded most of them, and when the 300 replacements finally arrived they went straight into stock. The importer then added "at the Buyer's option" and "finished products shipped within 30 days" to the clause, and started taking 1.5% free spares with every order. A replacement is only worth as much as its arrival date.

Case 3 — An epidemic failure clause that secured action on the whole lot

The importer sold folding camping chairs. Buckle breakages kept coming in from one lot, and when counted they passed 4% of the shipped quantity. It turned out the factory had switched the resin for the moulded buckles to a different supplier without telling the importer.

Because the contract had both an epidemic failure clause and a component change approval clause, the discussion was short. The factory air-freighted replacement buckle kits for the entire lot and reimbursed customer notices and courier costs at the agreed rates. Handled as individual claims, units past their warranty period and units that hadn't failed yet would have been left out.

11. Common mistakes

These come up again and again in warranty consultations.

• Leaving "Warranty 1 year" as a single line on the PI with no terms behind it
• Accepting a warranty counted from shipment that ends months before your consumer warranty
• Adding a date-of-sale clause without agreeing how the sale date will be proven
• Having no lot number or date code on the product, then arguing over which shipment a unit came from
• Accepting factory wording that classes batteries as consumables, which removes the most likely defect from cover
• Accepting "replacement in the next order" as the only remedy and leaving customers waiting for months
• Taking compensation only as credit notes and losing it all when the relationship ended
• Having no response times, so the factory stayed on "we are checking" for weeks
• Returning low-cost failed units physically until freight exceeded their value
• Getting the unit cost back but absorbing all local collection and reshipping costs
• Having no epidemic failure clause and handling a lot-wide defect one claim at a time
• Extending the period while leaving remedies and costs blank
• Trying to rewrite the clause after a defect blew up, and damaging the relationship

12. Warranty terms checklist

Before you negotiate

• I have written down the warranty period and terms I give my own customers
• I have worked out the time from shipment to the average date of sale
• I have compiled in-use failure rates and defect types from past orders
• I have set a target period based on category norms
• I have decided what I can offer in return, and how far I will go

When writing the clause

• The period and start date use a "whichever comes first" formula
• Proof of sale date and lot number or date code marking are agreed
• Failure to meet specification is covered
• Consumables are limited to a named list, with performance thresholds for key parts such as batteries
• The factory carries the burden of proving an exclusion applies
• The buyer chooses the remedy
• Each step has a deadline, and there is a deemed acceptance clause
• Freight, local collection and repair labour costs are assigned line by line
• An epidemic failure threshold and a component change approval clause are included
• Claims after termination are settled in cash

While the relationship runs

• I receive free spares with each order and log how they are used
• I track claims by lot and watch how close each lot is to the epidemic threshold
• I record whether the factory meets its response deadlines
• I review warranty terms against defect data at each annual renewal

Final thoughts - a warranty is six lines, not one

When importers negotiate warranties, they usually start with the length. One year or two is the most visible number on the page. But when something actually goes wrong, the money is rarely decided by the length. It is decided by when the warranty started, when the replacements arrive, who pays the couriers and the labour, and what happens when the factory stops replying.

Once your goods are in customers' hands, you are holding very little of the factory's money. What you can rely on then is the wording you agreed earlier. That is why warranty terms should be settled while business is going well and both sides can still discuss them with a smile.

Getting started is simple. Find the warranty section in your current contract or PI and check it against the six points in this article: period, start date, scope, remedy, response time and cost. If any of them are blank, fill those in first at your next order or renewal.

GreenFrog Seoul supports importers from designing warranty terms by product through negotiating start dates, remedies and cost clauses, drafting the Chinese contract wording, and working with the factory on root cause analysis and compensation when claims arise. If a defect has already surfaced and you need to settle compensation with the factory, we start with the claim. If nothing has gone wrong yet, we start by reviewing your contract terms.