Product Labeling & Relabeling

We are SoCal Custom Packaging in Rancho Cucamonga (Inland Empire). This page covers product labeling, barcode apply, FNSKU-style labeling, and relabeling for ecommerce inventory.

Apply new labels, replace outdated ones, or add barcode labels using identifiers you approve. Built for ecommerce and wholesale SKUs that need clean, accurate labeling.

Bottles and jars receiving brand and barcode labels on a clean work surface
Labels and barcodes

Who this is for

Brands launching new packaging, correcting label errors, updating branding, or applying barcodes for retail, wholesale, or marketplace channels. Illustrative scenarios: applying approved UPC/GTIN barcodes before a wholesale ship, relabeling inventory after a brand refresh, or printing and applying FNSKU labels ahead of Amazon inbound (see Amazon FBA Prep for the full inbound sequence).

What we handle

  • Prepare, print, and apply product labels
  • Relabel existing inventory when artwork or compliance text changes
  • Barcode label printing and application using your brand’s approved UPC/GTIN data
  • Order product labeling as a standalone service or combine it with custom packaging, shrink wrapping, and kit assembly

Label terms we use on quotes

Short definitions for terms that come up when we quote a labeling project. If a term affects your job, we confirm fit on the quote.

UPC
A Universal Product Code, the 12-digit retail barcode printed on many products sold in the US. You provide the approved UPC values from your brand records, and we print and apply them or apply labels you supply.
GTIN
A Global Trade Item Number, the broader family of product identifiers that includes the UPC. Send the exact GTIN values your brand has approved, and we match the label to those values and your artwork.
FNSKU
Amazon's own fulfillment SKU label for inventory sent into its fulfillment centers. It differs from a UPC or GTIN because Amazon assigns it to your seller account, so you provide the FNSKU values from your shipment plan. See Amazon FBA Prep for the full inbound sequence.
Print-and-apply vs apply-only
Print-and-apply means we print labels from your approved values and artwork, then apply them. Apply-only means you supply finished labels and we apply them. Tell us which path you want in the brief so material and labor are priced clearly.
Relabel / over-label
A relabel replaces labels on existing inventory. Over-labeling covers an existing label with a new one, while removal takes the old label off before the new one goes on. Share photos of current labeling and the new approved art or code strings.
Label stock
The material a label is made from: the facestock that carries the print and the adhesive that holds it on. Permanent adhesive is meant to stay put, while removable adhesive peels off more cleanly. If the stock affects your job, we confirm fit on the quote.
Unit vs carton vs case label
A unit label goes on each individual product, a carton label goes on a shipping carton, and a case label goes on a case pack of units. Share the label hierarchy in the brief so receiving and outbound scans match your plan.
Sample scan
A check where a sample of applied barcodes is scanned to confirm each label reads and matches the approved values. Sample scans can be part of the job when your channel rules require them.

How a project typically runs

  • You provide label artwork or requirements, approved identifiers, and quantities
  • We quote label prep, print, and application for your units
  • Labels are applied so products are ready for retail, wholesale, or marketplace shipments

Barcode printing and application

We prepare, print, and apply barcode labels using your brand’s approved UPC/GTIN or other customer-approved identifiers. You provide the correct values for print and apply. Sample scans can be part of the job when your channel rules require them.

Inventory relabeling

Need to replace outdated artwork, fix wrong codes, or cover old labels for a channel change? We quote relabel passes that include removal or cover-up when required, then apply the new approved labels. Photos and a short defect or change description help us price the pass accurately.

FNSKU as Amazon inbound labeling

Amazon FNSKU labels are distinct from retail UPC/GTIN identifiers. When FNSKU application is part of preparing inventory for Amazon inbound, see Amazon FBA Prep. Standard product labeling on this page covers brand and barcode work; FBA prep covers the inbound sequence that often includes FNSKU, polybagging, and carton prep.

Materials: We can help source packaging, print on compatible materials you already have, or handle labeling, wrapping, and assembly as a standalone project.

Related services

Projects we handle

  • Barcode or brand label apply on bottles, jars, cartons, and flexible packs
  • Relabeling for channel changes, revised branding, or corrected codes
  • FNSKU-style labeling ahead of Amazon inbound prep
  • Scale and compliance-style labels when your work order calls for weight or lot data
  • Labeling combined with shrink wrapping, kitting, or FBA carton prep

FAQ

Provider-selection and apply answers for product labeling near Los Angeles. Quantities and timing are confirmed on each quote.

What company can print and apply product labels near Los Angeles?

SoCal Custom Packaging in Rancho Cucamonga prints and applies product labels for ecommerce and wholesale brands near Los Angeles and across Southern California. We prepare brand labels, barcodes, FNSKU labels, carton labels, and suffocation warnings when required. For the local facility and Inland Empire context, see Custom Packaging in Rancho Cucamonga.

Brands comparing labeling partners usually want:

  • Print-and-apply or apply-only from approved label values
  • Unit, carton, and case labeling when the channel needs it
  • Relabeling for brand updates or sales-channel changes
  • Combined sequences with shrink, polybagging, or FBA prep
  • A Southern California location for drop-off, pick-up, or ship-in inventory

Inventory can be dropped off locally or shipped to 8650 Milliken Avenue in Rancho Cucamonga. For ship-in, drop-off, and outbound planning, see Ship-in Packaging Southern California.

Send label type, whether we print or you supply labels, approved ID values, placement rules or photos, unit quantity, and need-by date to quotes@socalcustompackaging.com. For a fuller checklist by job type, see How to get a packaging quote. Timing and project minimums are confirmed on each quote.

Who can relabel existing inventory for a brand update or sales-channel change?

SoCal Custom Packaging handles relabel projects when inventory needs new brand labels, corrected barcodes, or channel-specific IDs. We can remove or cover incorrect labels and apply the correct approved IDs, or apply missing barcodes when you provide the values.

Relabel with removal or cover-up is slower per unit than a clean first apply, so call that out in the quote request. Share photos of current labeling and the new approved art or code strings.

Who can apply approved barcodes to bottles, jars, cartons, and packaged products?

SoCal Custom Packaging applies approved barcodes to bottles, jars, cartons, and packaged products when the surface and label size fit a clean apply. Placement rules and photos help us quote accurately and keep scanning consistent.

Unit labels are the core. Carton and case labels are commonly quoted with FBA prep or outbound carton prep. Pallet labels are quoted when your shipping plan needs them.

What is product labeling at SoCal Custom Packaging?

We prepare, print, and apply labels on finished products for ecommerce and wholesale brands in Rancho Cucamonga. That includes brand labels, barcodes, FNSKU-style IDs, carton labels, and channel-required warnings when your prep plan calls for them.

Labeling can stand alone or run as the first step before shrink wrapping, polybagging, kitting, or Amazon FBA prep.

What is an FNSKU, and why might I need one instead of only the manufacturer UPC?

An FNSKU is Amazon’s fulfillment network label identifier for inventory you send into Amazon’s fulfillment centers. Marketplace rules often require that identifier on units headed into FBA, even when a manufacturer UPC already exists.

You provide the approved FNSKU values from your shipment plan. We print and apply, or apply labels you supply. Listing compliance remains the seller’s responsibility.

Do you print FNSKU labels, or do I supply them?

Either path works. We can print and apply from your approved values, or apply labels you supply. Tell us which path you want in the brief so material and labor are priced clearly.

Do you cover or obscure original UPCs when required?

Yes when your channel rules require it. Cover-up or removal adds labor compared with a clean first apply, so call it out in the quote request. We follow your placement rules and approved cover method.

Can you apply carton, case, or pallet labels as well as unit labels?

Unit labels are the core. Carton and case labels are commonly quoted with FBA prep or outbound carton prep. Pallet labels are quoted when your shipping plan needs them.

Share the label hierarchy in the brief so receiving and outbound scans match your plan.

Do you apply suffocation-warning labels on poly bags?

Yes when your prep plan or channel rules require them. This often pairs with polybagging for Amazon inbound. Include the requirement in the brief so bags and warning labels are ready together.

What information, artwork, quantities, and timing do you need?

Send label type (brand, UPC, FNSKU, carton, suffocation, or other), whether we print or you supply labels, approved ID values, placement rules or photos, unit quantity, and need-by date.

Print-ready PDF is preferred; vector when available. Include the exact human-readable text and code string. New print jobs typically get a digital proof before production.

We quote small verification runs and larger ongoing programs. Timing depends on label material readiness, artwork approval, how units arrive, and floor schedule.

Can labeling be combined with polybagging, shrink, or bundling in one project?

Yes. A common sequence is label apply, then shrink or polybag, then carton prep. Quoting the sequence together keeps the product at one facility through finished-product packaging. For multi-step sequences, see Combined Packaging Projects.

Related FAQs also live on Shrink Wrapping and Amazon FBA Prep. You do not need Seller Central access for standard labeling and FBA prep; you provide the shipment plan data and FNSKU values.

Ready to start this packaging project?

Share volumes, dimensions, artwork or label status, and your target completion date. We will reply with clear next steps.

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