# product traceability GS1 importers: GS1 and batch tracking explained
Amazon sellers know about traceability because Amazon forces it: every unit needs a scannable barcode, and the marketplace tracks which unit went to which customer. But traceability matters far beyond Amazon. Retailers, regulators, and customers in markets around the world increasingly expect importers to know exactly which batch a product came from and where it went. The global standard for doing this is product traceability GS1 importers set up properly, and batch tracking is the practice that makes it useful.
This article explains what GS1 is, how batch tracking works for an importer buying from China, and what to set up before a retailer or a regulator asks you questions you cannot answer. Whether you sell on one marketplace or across a dozen countries, product traceability GS1 importers implement early is far cheaper than the version you build under pressure.
What traceability means for an importer
Traceability is the ability to follow a product through your supply chain in both directions. Forward: from a production batch at the factory to the specific customers or retailers who received units from that batch. Backward: from a customer complaint or a defective unit back to the batch, the production date, and the materials used.
Why does this matter to you? Three reasons. First, recalls. If a batch turns out to be defective or unsafe, you need to know which units are affected and where they are. Without batch records, a problem with one production run becomes a problem with everything you have ever sold. Second, retailers. Large retail chains increasingly require suppliers to provide traceability data as a condition of listing. Third, regulation. Product safety rules in the EU, the UK, and other markets place responsibility on the importer for products they place on the market, and that responsibility is much easier to meet when you can trace. This is why product traceability GS1 importers build is becoming a commercial requirement, not just a nice-to-have.
None of this requires fancy software at the start. It requires discipline: recording which batch each shipment came from and which customers received which batches.
GS1: the foundation product traceability GS1 importers build on
GS1 is the nonprofit organization behind the barcode system used in retail worldwide. When you see a barcode on a product in a shop anywhere, the number underneath it is almost certainly a GS1 number. For importers, the relevant pieces are simple, and product traceability GS1 importers rely on starts with getting these basics right.
The GTIN, Global Trade Item Number, is the unique number that identifies your product. If you sell through retail channels, each product variant needs its own GTIN. You get GTINs by joining GS1 in your country and licensing a company prefix, then assigning numbers to your products. This is the legitimate route. Buying "cheap GTINs" from resellers is risky: the numbers may be duplicated or invalid, and retailers and marketplaces check.
Barcodes encode the GTIN so scanners can read it. Your factory in China can print barcodes on packaging during production, which is far cheaper than stickering later. Give the factory the barcode artwork with your specifications and verify on the first production run that the codes scan correctly. A barcode that looks right but does not scan is a surprisingly common and expensive mistake, and it is one that product traceability GS1 importers check for on the very first order.
GS1 also defines standards for encoding batch and lot numbers, expiry dates, and serial numbers in barcodes. This is where product traceability GS1 importers implement goes beyond just identifying the product: the barcode can carry the batch, so anyone scanning the unit knows exactly which production run it came from.
A practical note: Amazon's FNSKU system is Amazon-specific. A GTIN is universal. If you only ever sell on Amazon, Amazon's labels suffice. If you sell anywhere else, retail shops, your own website, other marketplaces, get proper GS1 numbers. Sorting this out after you are already selling in multiple channels is painful.
Batch tracking in practice
Batch tracking means assigning a batch or lot number to each production run and recording it at every step. Here is how that looks for a typical importer, and how product traceability GS1 importers turn the standard into a working system.
When you place an order, ask the factory to mark the batch number on the cartons and, ideally, on the product packaging. The batch number can be a date code, a production run number, or your own purchase order number. What matters is that it is unique to that run and recorded.
When goods arrive, record which batch numbers came in, in what quantities. When you ship to customers, retailers, or Amazon, record which batches went where. A spreadsheet does this fine at small scale: columns for batch number, production date, quantity received, and where each portion went. The discipline is simple, and product traceability GS1 importers prove it works at any scale: record the batch in, record the batch out.
This record is what makes recalls manageable. If a customer reports a defect, you check the batch, look at how many units from that batch went out and to whom, and you scope the problem precisely. Without the record, you are guessing, and guessing means either recalling everything or hoping the problem stays quiet. Neither is acceptable. With product traceability GS1 importers set up correctly, you can answer a regulator's questions in an afternoon; without it, you cannot answer at all.
Batch tracking also strengthens your position with suppliers. When you can show a factory that defects cluster in one specific batch, the conversation about responsibility is short. When you can only say "some units were bad," the factory can shrug. Data wins arguments.
For food, cosmetics, supplements, and children's products, batch tracking is not optional in practice. Regulators in most markets expect it, and retailers demand it. If you import in these categories, set up batch discipline from the first order. Retrofitting it later is much harder.
What to ask your factory
Most Chinese factories already use batch or lot numbers internally for their own production control. Your job is to make their system visible to you, because that visibility is what product traceability GS1 importers mean in practice: the factory's internal batch numbers, shared with you on every document. Ask for the batch number format they use and request that it appear on carton labels and, where practical, on the product or its immediate packaging.
Include traceability in your product specifications document, the same document that covers materials, dimensions, and quality standards. Specify: batch number format, where it must appear, and that packing lists must show quantities per batch, not just a total. Factories follow written specifications far more reliably than verbal requests.
On the first order with a new factory, verify. Check that the batch numbers on the cartons match the packing list, and that the packing list breaks down quantities by batch. This one check on the first shipment establishes the habit for every order after.
If a factory resists or seems confused by the request, treat it as information. A factory that cannot tell you which batch a unit came from probably cannot control its production consistently either. For regulated product categories, that is a reason to look elsewhere.
Conclusion: building the system as you grow
At small scale, a spreadsheet and disciplined carton labeling are enough. As volumes grow, consider tools that reduce manual work: inventory software that tracks batches, barcode scanners at your warehouse, or a 3PL that records batch numbers on inbound and outbound. The principle stays the same at every scale, and the product traceability GS1 importers scale up keeps the same records, just with better tools.
Keep the records for as long as your product liability exposure lasts, which is longer than most importers expect. Product safety rules in many markets hold importers responsible for years after sale. Check the rules in each market you sell in and set your record retention accordingly. Digital records cost nothing to keep.
One more thing worth doing: put a batch or date code on the product itself where practical, not just the outer carton. Cartons get discarded. If a customer contacts you about a product two years later, the code on the unit is the only link back to the batch. For products where printing on the unit is impractical, the code on the inner packaging is the next best place.
FAQ
### Do I need GS1 barcodes if I only sell on Amazon?
Amazon accepts its own FNSKU labels and can exempt you from GS1 requirements in some categories. But GS1 numbers are the universal standard: retailers, other marketplaces, and your own direct sales all use them. Getting proper GS1 numbers early avoids rework when you expand beyond Amazon.
### Where do I get legitimate GTINs?
Join GS1 in your own country and license a company prefix. Avoid resellers offering cheap single GTINs: the numbers may already be in use or invalid, and marketplaces verify them. The cost of a proper prefix is small compared to the cost of relabeling thousands of units, and it is the foundation product traceability GS1 importers build on.
### How do I get my Chinese factory to use batch numbers?
Put it in the written product specification: the batch format, where it appears on packaging and cartons, and that packing lists break down quantities per batch. Verify on the first shipment. Most factories already track batches internally; you are just asking them to share the information.
### What is the difference between a GTIN and a batch number?
The GTIN identifies the product: this is your blue widget, distinct from your red widget. The batch number identifies the production run: these blue widgets were made in March, those in June. You need both for real traceability: the GTIN tells you what it is, the batch tells you when and where it was made. Together they are the product traceability GS1 importers maintain on every unit they sell.
### How long should I keep traceability records?
Keep them at least as long as your product liability exposure in each market you sell in, which is typically several years after the sale. Digital records are cheap to store. Check the product safety rules in your markets rather than guessing, since the periods differ.