Professional 3PL Prep Services for Amazon FBA & Walmart WFS
Running an online storefront and expanding your catalog requires your full attention. The minute details of platform compliance—polybagging, strict barcode placement, and routing rules—should not slow you down.
Amazon FBA Ready
FNSKU & inbound compliance
Walmart WFS
UPC & GTIN routing
West Coast Hub
Rancho Cordova, CA
Strict QC
Inspection & accuracy
At SN International LLC, we make fulfillment simple so you can stay focused on sales. Operating out of our Rancho Cordova, California facility, our team actively manages thousands of product SKUs daily. We know exactly what it takes to get inventory received at fulfillment centers quickly, accurately, and without costly defect flags.
Whether you are a growing private label or routing wholesale shipments from a vast network of suppliers, we treat your inventory with the exact same strict quality control we apply to our own.
Our Core Guarantee
Transparent Pricing
$0.30 per standard-size unit. No hidden fees.
Speed to Market
72-hour standard turnaround once inventory is received.
100% Platform Compliance
Fully updated for Amazon's latest FNSKU mandates and Walmart's strict GTIN routing rules.
How It Works: 3 Simple Steps
Source, upload your routing data, and we prep to your shipment plan
Source & Route Your Inventory
Purchase inventory from any supplier, wholesaler, or distributor and ship it directly to our Rancho Cordova warehouse.
Upload Your Routing Data
Use the secure file drop on this page to submit your CSV. Amazon FBA: ASIN and Quantity. Walmart WFS: UPC/GTIN and Quantity. Optional: FNSKU, PO/Order ID, Supplier Tracking ID.
We Prep, You Sell
Once inventory arrives, we confirm receipt. You provide the final platform shipping labels, and our team preps, packs, and dispatches to your designated fulfillment centers within 72 hours.
Get Started Now
Upload your routing data—your CSV with ASINs or UPCs and quantities
CSV File Requirements
- Amazon FBA: ASIN/Item ID + QTY (quantity)
- Walmart WFS: UPC/GTIN + QTY
- Include SKU column where applicable
- Optional: FNSKU, PO/Order ID, Supplier To Prep Tracking ID
- File format: .csv
Drop your CSV file here
or click to browse
Transparent pricing • No hidden fees • Instant quote
Why Choose Our 3PL Prep Services?
Transparent pricing, West Coast routing, and prep built for complex catalogs
Transparent Pricing
$0.30 per standard-size unit with no hidden fees—know your prep cost up front.
72-Hour Turnaround
Standard turnaround within 72 hours of receipt for standard-size units—keep restocks on schedule.
Platform Compliance
Prep aligned with Amazon FNSKU rules and Walmart GTIN requirements—from labels to cartons and pallets.
Category Expertise
From high-volume stationery to oversize freight—our warehouse scales with your catalog.
The West Coast Routing Advantage
Located strategically in Rancho Cordova, California, our facility is perfectly positioned for sellers importing goods through major West Coast ports. By routing your inbound freight directly to our Sacramento-area warehouse, you reduce domestic transit times, cut down on freight forwarding costs, and get your inventory checked in to West Coast Amazon and Walmart fulfillment centers significantly faster.
Specialized Category Expertise
Not all inventory is created equal, and generic prep centers often struggle with complex catalogs. Our California warehouse is equipped to scale and manage massive, multi-category catalogs effortlessly. Whether you are routing high-volume shipments of stationery and office supplies that require meticulous barcode matching, or you need specialized, heavy-lifting prep for oversize furniture and industrial goods, our facility is built to handle your specific inventory needs.
Complete Prep & Routing Capabilities Under One Roof
We do not just slap labels on boxes. Our warehouse team provides end-to-end inspection and preparation to ensure your shipments flow seamlessly into Amazon and Walmart networks.
Thorough Receiving & Inspection
The moment your inventory arrives from your suppliers, we verify unit counts and perform a baseline physical inspection to catch visible damage or packaging flaws before they reach your customers.
Compliant Barcoding & Labeling
A single blurry barcode can stall an entire shipment. Our team utilizes commercial-grade thermal printers to apply Amazon FNSKUs directly over manufacturer barcodes, ensuring perfect scans at the fulfillment center. For Walmart WFS, we verify and apply the required 12-digit UPC or 14-digit GTIN labels.
Secure Packaging & Polybagging
We use platform-approved materials to protect your items in transit. If an item requires polybagging, we ensure it meets the strict 2mil thickness requirement and apply the mandatory suffocation warnings for bags with a 5-inch opening or larger.
Kitting, Bundling, & Returns Processing
Looking to increase your average order value through multi-packs? We offer precise kitting and bundling services. We also process inbound returns, inspecting items to determine what can be safely prepped and resold.
Products, Brands, and Real Supply Chain Strength
We do more than prep. We also help sellers source products through our wide brand network. That gives you a steady supply and fair pricing.
Our goal stays simple: help you grow without stress—keep things clear and keep things moving.
Why Sellers Choose SN International LLC
At SN International LLC, we are more than a prep provider—we are a fulfillment partner that scales with your business.
Real Warehouse Experience
We actively manage thousands of SKUs—prep is built on real operations, not theory.
Platform Compliance
We stay current with Amazon FNSKU mandates and Walmart GTIN routing rules.
Clear Communication
Non-standard prep is quoted upfront—no surprises after inventory is on the dock.
Your Inventory, Our Care
Strict quality control on every unit—whether private label or wholesale routing.
Frequently Asked Questions
Everything you need to know about our 3PL Prep Services
What exactly is included in the $0.30/unit standard prep service?
How do I submit my inventory for prep?
What fulfillment centers do you ship to?
Do you offer rush processing?
Are there any hidden fees?
Do I need FNSKU labels if my product already has a UPC?
What happens if resellers send inventory without Amazon barcodes after March 31, 2026?
Where do I get my Amazon FNSKU labels?
Where should the FNSKU label be placed?
What labels are required on Amazon shipment boxes?
Do you support pallet (LTL/FTL) shipments to Amazon?
When is polybagging required for Amazon, and what warning is needed?
What barcode does Walmart WFS require on products?
Does Walmart WFS require labels on master cases or pallets?
Should price tags or retailer-specific stickers be removed for Walmart WFS?
What if my barcode labels are blurry or won't scan?
Can I ship inventory from any supplier?
Can you help if I can't submit the CSV?
Phone: (888) 795-8816
Email: info@snillc.com
Fax: (510) 225-1054
Ready to Get Started?
Route inventory to Rancho Cordova, upload your CSV, and we will prep to your Amazon or Walmart shipment plan.