In short: Getting products FBA-ready starts at the factory, not at the Amazon warehouse door — FNSKU labels, poly bags, carton labels, and packaging all need to meet Amazon's exact specifications before the shipment leaves China or Vietnam, because Amazon's fulfillment centers reject or charge steep prep fees for anything non-compliant on arrival. Budget 3–5 extra days and a modest per-unit prep fee at the factory stage, plus a pre-shipment inspection, to avoid rejected inbound shipments that can cost weeks of lost selling time.

What does "FBA prep" actually mean at the factory level?

FBA prep covers everything Amazon requires on a product before it can be received into a fulfillment center: an FNSKU barcode label on each unit (not just the manufacturer's UPC), poly-bagging for loose or small items, suffocation warning labels on any poly bag with a 5-inch or larger opening, and correctly formatted carton labels showing SKU, quantity, and destination fulfillment center. Done at the factory, this typically costs $0.10–$0.40 per unit depending on complexity — done after the fact by a US-based prep center, the same work usually costs 3–5x more per unit.

Which factories can handle FBA-compliant packing, and which can't?

Not every factory is set up for FBA-specific prep, especially smaller workshops used to bulk-packing for wholesale, not per-unit retail fulfillment. Before placing a production order, confirm the factory has handled FNSKU labeling before (ask for a photo of a previous FBA-labeled carton), and send them Amazon's current packaging and prep requirements document directly rather than assuming they already have it — Amazon updates these requirements periodically, and a factory working from an outdated version is a common cause of rejected shipments.

How do you avoid Amazon rejecting an inbound FBA shipment?

The most common rejection reasons, in order of frequency, are: incorrect or missing FNSKU labels, cartons exceeding Amazon's weight or dimension limits, missing suffocation warnings on poly bags, and barcode labels that don't scan cleanly (low-resolution printing or labels applied over a curved or textured surface). A pre-shipment inspection before the container is sealed — checking a statistical sample against Amazon's current requirements, not just your own product spec — catches nearly all of these before the shipment reaches US soil.

Should FBA inventory ship direct to Amazon or via a US-based prep center?

How long does FBA prep add to a typical shipping timeline?

Factory-level FBA prep (labeling, poly-bagging, carton marking) typically adds 3–5 days to standard production time, since it happens as part of the final packing stage rather than as a separate process. A pre-shipment inspection adds 1–2 days if scheduled in advance. The bigger timeline factor is still freight: 25–35 days sea freight from China or Vietnam to a US port, plus inland transport to the receiving Amazon fulfillment center, versus 7–12 days for air freight at a significantly higher cost per kilogram.

What does a worked cost example look like for FBA prep?

For a 1,000-unit order of a small consumer product: FNSKU labeling and poly-bagging typically runs $150–$300 at the factory (vs. $600–$1,200 if done later by a US 3PL), and a pre-shipment inspection for a shipment this size typically costs $150–$250 — a small fraction of the cost of a single rejected shipment, which can mean weeks of lost Amazon sales rank and velocity while the issue is resolved.

Frequently asked questions

Can a factory in China apply FNSKU labels directly?

Yes — most established consumer-goods factories in Guangdong and Zhejiang routinely handle FNSKU labeling for FBA sellers, provided they're given the current label files and specifications in advance.

What happens if a shipment arrives at Amazon without correct labeling?

Amazon will either reject the shipment outright, requiring it to be relabeled and resent, or charge an unplanned prep service fee per unit to fix it on-site — both options cost significantly more and take longer than getting it right at the factory.

Is Vietnam a viable FBA sourcing alternative to China?

Yes for many product categories, particularly textiles, footwear, and furniture, though Vietnam's factory base has less built-in familiarity with FBA-specific prep than China's more mature consumer-electronics and general-goods manufacturing clusters — confirming FBA experience matters even more when sourcing from Vietnam.

Do I need a freight forwarder for FBA shipments, or can I ship direct?

You can ship direct, but a freight forwarder who inspects FBA compliance before the container is sealed catches labeling and packaging errors while they're still cheap to fix — most experienced FBA sellers use one for exactly this reason.

How far in advance should FBA prep requirements be sent to the factory?

Send Amazon's current packaging and prep requirements at the start of the production order, not just before shipping — some packaging decisions (carton dimensions, poly bag sizing) need to be built into the production plan, not retrofitted at the end.

How Epic Sourcing helps

Epic Sourcing's bilingual teams in China and Vietnam work directly with factories on FBA-compliant labeling and packaging, and run pre-shipment inspections against Amazon's current requirements before any container is sealed — so US sellers get FBA-ready inventory without the risk of a rejected shipment. See our quality control and factory audit service and freight forwarding service, or get in touch to discuss your next FBA shipment.

Related reading: Sourcing bulk stock for resale rather than FBA? See our Alibaba vs Temu guide for business buyers. Looking at a specific product category? See our backpack and bag manufacturer guide.

Last updated: 22 October 2026