Amazon FBA Prep Service in China: Labeling, Packaging, Shipping

FBA Prep by Product Type (China Costs)

Amazon assigns a required prep type to every category. Below are the 2026 prep rules per product type with China-side unit costs, where labor runs $0.05–$0.30/unit depending on volume and complexity.

The cost stacks additively: a fragile electronics SKU needs bubble wrap ($0.25) + polybag ($0.15) + FNSKU label ($0.05) = $0.45/unit in China, vs $1.00–$1.50 at a US prep center. For the full category-by-category checklist, see Amazon FBA prep requirements.

FNSKU Labeling Rules

The FNSKU (Fulfillment Network Stock Keeping Unit) is Amazon's internal barcode for your ASIN. Amazon scans this at receiving, so a misprinted or unreadable label means the unit is returned or relabeled at your cost.

• Cover the original factory barcode completely — Amazon must not scan two barcodes.
• Place the FNSKU on a flat surface, at least 1 inch (2.5 cm) from edges, folds, and seams.
• Use 600-dpi thermal labels, not inkjet — inkjet smudges in humidity and fails Amazon scanners.
• Scan every label with a handheld scanner during QC to confirm readability before sealing the carton.

For products where the manufacturer barcode (UPC/EAN) is already registered in Amazon's Brand Registry, you may use Manufacturer Barcode (Stickerless) — but most private-label sellers stick with FNSKU labels for control.

FBA Carton & Pallet Rules

After units are pre-labeled, they go into cartons and then onto pallets for LTL/SPD inbound. Amazon rejects cartons that violate the rules below.

Cost: China Prep vs US Prep Center

The single biggest reason to prep in China is cost. US FBA prep centers charge per-unit handling fees plus storage; China prep uses factory labor at $3–$6/hour. Below is a real cost comparison for 1,000 units of a standard soft-goods SKU requiring polybag + FNSKU label.

Savings: $570 per 1,000 units. Scaled to a 10,000-unit order, that's $5,700 back in margin — enough to cover a full AQL 2.5 QC inspection and DDP shipping. For the broader landed-cost picture, see Amazon FBA sourcing from China.

Worked Example: 1,000 Units Polybag + FNSKU in China

Let's break down a real 1,000-unit order of private-label cotton tote bags from a Yiwu-area factory, requiring polybag + FNSKU label, shipped DDP to LAX9.

• EXW unit price: $1.80 (1,000 pcs, custom print)
• China prep (polybag + FNSKU): $0.18 × 1,000 = $180
• Carton packing (20 pcs/carton, 50 cartons): $25
• Sea DDP freight (0.6 CBM, 1.2 CBM): $360
• US duty (6.5% + Section 301 7.5%): $252
• Total landed: $1,800 + $180 + $25 + $360 + $252 = $2,617 → $2.62/unit

Same order prepped in the US: add $750 prep + $120 inbound LTL → $3.49/unit. The China prep saves $0.87/unit, or 25% of landed cost.

FBA Prep Process in China (5 Steps)

1. Prep mapping at PO stage. Before production, define the prep type per SKU and confirm the factory can do it in-house or route to a prep warehouse. Send FNSKU label PDFs and suffocation-warning artwork.
2. Inline QC during production. Factory applies polybag, FNSKU, bubble wrap as units come off the line. Spot-check 5% for barcode scannability and warning-label placement.
3. AQL 2.5 pre-shipment inspection. A third-party inspector (or Yeatru QC) checks barcode scannability, polybag seals, warning labels, carton weight, and FBA box ID labels. See the full prep checklist.
4. Carton & pallet consolidation. Units packed into single-SKU cartons (≤50 lb), palletized 40×48 × ≤72″, 4-side labeled with the Amazon shipment ID generated from Seller Central.
5. DDP shipping to the FBA fulfillment center. Forwarder ships LCL/FCL or air to the assigned FC, clears customs, and handles last-mile. Amazon receives and scans units into inventory. See FBA shipping from China.

Common FBA Prep Mistakes (and What They Cost)

• Inkjet FNSKU labels. Smudge in transit → 5–15% of units un-scannable → Amazon relabels at $0.20/unit or returns. Use 600-dpi thermal.
• Missing suffocation warning. Units with bag openings ≥5″ lack the warning → Amazon refuses the whole carton. Cost: $25–$100 return fee + re-ship.
• Original barcode not covered. Amazon scans the factory UPC instead of FNSKU → inventory goes to the wrong ASIN → stranded stock.
• Overweight cartons. Over 50 lb triggers $25–$50 fee per carton and can damage units underneath. Weigh every carton.
• Taping two boxes together. Amazon requires single boxes; bundled boxes are returned at the seller's cost.
• Wrong pallet size. Non-40×48 pallets require re-palletizing at $40–$80/pallet at the destination.

How Yeatru Handles FBA Prep in China

Yeatru Sourcing runs FBA prep at Yiwu and Shenzhen consolidation warehouses for Amazon FBA, TikTok Shop, and wholesale buyers. Our prep service includes:

• Prep-type mapping per SKU against Amazon's 2026 prep matrix
• FNSKU label printing on 600-dpi thermal printers, scannability tested on every lot
• Polybag with suffocation warning, bubble wrap, taping, set/sticker removal
• Expiration / lot-code printing for food and beauty SKUs
• Carton consolidation (single-SKU, ≤50 lb), FBA box ID labels on 2 sides
• Palletization 40×48 × ≤72″ with 4-side shipment-ID labels
• Hand-off to DDP FBA shipping with real-time tracking

All prep includes QC photo documentation before cargo leaves, so you see every carton before Amazon does.

Frequently Asked Questions

1. What are Amazon FBA prep requirements?

Every FBA unit needs an FNSKU barcode on a flat scannable surface 1 inch from edges, original factory barcode covered, polybag with suffocation warning on openings 5 inches or larger, bubble wrap for fragile SKUs, expiration dating for food and beauty, and cartons under 50 lb / 22.7 kg with FBA box ID labels on two sides. See the full FBA prep requirements checklist.

2. How do I label FNSKU correctly?

Print FNSKU barcodes on 600-dpi thermal labels, cover the factory UPC, place on a flat surface 1 inch from edges and folds, and scan each label with a handheld scanner to confirm readability. Inkjet labels smudge and are rejected by Amazon.

3. When is a suffocation warning required on polybags?

Amazon requires an English suffocation warning printed on any polybag with an opening of 5 inches or larger. The warning must be on the bag itself, not a sticker, and the bag must be 1.5 mil minimum thickness with the FNSKU visible through transparent material.

4. Do food and beauty products need expiration dates?

Yes. Perishable SKUs must show expiration date, lot number, and manufacture date in YYYY-MM-DD format, printed not handwritten, with at least 90 days remaining shelf life when received by Amazon. Expired units are destroyed at the seller's cost.

5. How much does FBA prep cost in China vs the US?

In China, polybag + FNSKU label costs $0.10–$0.30 per unit, bubble wrap $0.15–$0.30, taping $0.05–$0.10. A US prep center charges $0.50–$1.50 per unit for the same work. On 1,000 units, China prep costs $180 vs $750 in the US.

6. Should FBA prep be done at the factory or by an agent?

Factory prep is cheapest ($0.05–$0.20/unit) but quality varies; an agent or prep warehouse costs $0.10–$0.30/unit and guarantees compliance with QC photos. Use factory prep for high-volume standard SKUs and agent prep for fragile, regulated, or multi-SKU orders.

Conclusion

FBA prep in China is the highest-ROI step in the Amazon FBA supply chain: applying FNSKU labels, suffocation-warning polybags, bubble wrap, and carton/pallet compliance at the factory or prep warehouse costs $0.05–$0.30/unit — a fraction of US prep centers — and avoids Amazon's return and relabel fees. The keys are mapping prep type per SKU, using 600-dpi thermal FNSKU labels on flat surfaces, sealing polybags with the 5-inch suffocation warning, keeping cartons under 50 lb, and palletizing 40×48 × ≤72″ with 4-side labels. On a 1,000-unit order, China prep saves roughly $570; scaled to your annual volume, that pays for the entire sourcing and QC stack. Get a free FBA prep quote from Yeatru within 24 hours — we'll map your SKUs, price the prep, and quote DDP to your Amazon FC.