When briefing manufacturers on custom packaging, you must define more than surface graphic design: you need to convey what goes inside, how the package functions in retail and consumer hands, and the physical condition in which it must be delivered.
Material substrates, structural die-lines, surface finishes, and protective inserts directly interact.
1. Define Internal Product Characteristics & Functional Packaging Roles
Begin by listing the primary product's exterior dimensions (L × W × H), weight, piece count, and comprehensive Bill of Materials (BOM) for accessories.
Detail every item sharing the carton—user manuals, cables, power adapters, and warranty cards.
Rank your design priorities across visual branding, drop-impact protection, and ease of opening (unboxing user experience).
2. Distinguish Internal vs. External Dimensions & Flexible Design Tolerances
A box's exterior dimensions differ significantly from its usable internal clearance.
Explicitly designate whether quoted dimensions indicate inside or outside boundaries, the product’s packing orientation (vertical vs. horizontal), and finger-recess clearance necessary for effortless product removal.
3. Material Selection by Packaging Format & Functional Performance
Subjective adjectives like 'premium look' or 'sturdy feel' are too vague to generate comparable factory quotations.
Instead, describe quantifiable parameters: tactile weight, board caliper/grammage, total internal payload, assembly speed, and stacking load-bearing requirements for international freight.
| Packaging Format | Key Technical Specifications to Detail |
|---|---|
| Folding Carton | Paperboard stock (SBS, FBB, duplex), basis weight (GSM), tuck-end/crash-lock structure, closure |
| Rigid Box | Greyboard caliper, covering paper (specialty art paper, embossed), interior lining, storage CBM |
| Corrugated Box | Flute profile (E-flute, B-flute), linerboard grade, burst strength, flexo vs. litho-lamination |
| Pouch / Sachet | Barrier film laminate (foil, kraft, clear barrier), dimensions, seal width, tear notch / zipper |
| Insert / Divider | Structural support nodes, finger access, substrate (thermoformed plastic, EVA, molded fiber) |
A generic material name alone cannot guarantee tactile luxury or protective integrity.
Board caliper (GSM), core thickness, laminate coatings, and structural geometry must be evaluated holistically, integrating drop testing and compression trials into your sampling schedule.
4. Structural Closure Engineering & Kitting Assembly Workflow
Specify the closure mechanism—magnetic flap, book-style opening, or telescope friction lid—and define exactly how components are seated.
Consider the visual focal point revealed at the moment of opening, as well as whether consumers can easily re-seat the item for ongoing daily use.
Define your required delivery state in the RFQ so all suppliers price the identical operation.
5. Prepress Dieline Control & Surface Decorative Finishes
Artwork should only be placed once structural box dimensions are frozen on a supplier-verified master dieline.
Implement strict dieline revision control so that dimensional tweaks immediately update CAD die-cut files, preventing outdated tooling usage.
Formally designate signing authorities for regulatory copy and barcode (JAN/EAN/UPC) scannability before plate making.
For how outer packaging connects with the other cosmetic OEM stages, see The Full Cosmetic OEM Process in China｜Formulation, Container, Packaging, Inspection.
6. Defining Staged Prototyping Objectives & Acceptance Checkpoints
An unprinted white structural dummy audits mechanical fit, structural rigidity, and insert retention.
Subsequent wet proofs or finished mockups validate spot colors, legibility, and surface coatings.
7. Comprehensive Quotation Scoping & Excess Inventory Governance
Beyond unit box costs, verify whether quotes encompass inserts, instruction sheets, barcode labels, proofing fees, tooling/cutting dies (NRE costs), manual kitting labor, and internal transfer freight between Chinese vendors.
If packaging MOQ exceeds product batch sizes, establish terms for leftover material warehousing and subsequent order drawdown.
GAMU’s Guangzhou team will clarify packaging production and manual assembly scopes.
If the core product is simultaneously under OEM development, we align packaging dieline approval with prototype sign-off milestones to streamline your critical path.