Before a shipment leaves the factory, the export carton is where product protection, compliance marks, and freight cost meet. At this stage a buyer needs a compact, verifiable record: exact outside size and weight, what goes on the carton, how the goods are protected inside, and how handlers should move and stack the cartons. The following sections turn those needs into specific questions to ask, comparisons to make, and the documentation to collect so you can make the next sourcing decision with a visible paper trail.

Confirm exact carton dimensions and declared weights

Request the outer carton length, width, and height in centimeters or inches, the tare weight of the empty carton, the net product weight per carton, and the gross weight. Ask the supplier to state whether the dimensions are internal or external and how they measured them. Small differences compound at scale for freight tariffs and pallet planning, so insist that measurements come from a physical carton or a factory layout drawing, more than a packing list estimate.

Ask for a measurement method and tolerance. For example, the supplier can confirm dimensions taken with a calibrated tape or digital caliper and note whether flaps are included. If your freight quote or pallet optimization depends on strict limits, request a photographed measurement with a ruler beside the carton and the gross weight on a scale. Record the measurement method and date alongside the numbers for future comparison.

• Exact outside LxWxH and whether stated in cm or inches
• Net weight per product, number of units per carton, tare weight, and gross weight
• Measurement method, tolerance, date, and a photo with ruler and scale

Specify carton construction and protection requirements

Ask the supplier to describe the carton board type and strength: single-wall, double-wall, flute type, or a specific board grade if you have one. If the product is fragile, require an edge crush test (ECT) rating or compression strength value and ask the supplier to confirm whether cartons will be new or recycled material. Where reusing cartons affects stacking or insurance, make that a decision item.

Clarify inner protection: the number and type of protective layers, foam inserts, bubble wrap, dividers, desiccants, or anti-static packaging. Request a packing diagram that shows unit orientation inside the carton and the exact quantity per carton. If your acceptance depends on a stress-test, ask for a description of any factory drop, vibration, or compression tests and the pass criteria, or schedule an independent test before shipment.

• Carton board type and strength or ECT rating if needed
• Inner packing method and a packing diagram
• Whether cartons are new or recycled and any factory stress-test details

Detail marks, labels, and where they must appear

Provide the supplier with a clear marking specification: printable artwork or exact text for carton marks, preferred location on the box, size of marks, font legibility, and mandatory symbols such as handling marks or country of origin if applicable to your customers. Ask for a photo mockup or proof print so you can confirm placement and scale before full production.

Confirm label durability and contrast. If labels will be scanned by warehouses, verify barcode type, size, quiet zone, and that the supplier will print on a flat face without folds. For multi-lingual shipments, state which languages must appear and whether the marking is permanent or applied with a removable sticker. Require a pre-shipment photo of the marked carton with a ruler for scale.

• Exact carton mark text or artwork and preferred placement
• Barcode and label specifications, including scan test if needed
• Photo proof of printed marks and size reference

Clarify handling, stacking, and palletization plans

Ask how cartons will be arranged on the pallet, the number of cartons per layer, number of layers, pallet type, and whether stretch wrap or strapping will be used. Request the planned pallet footprint and height so you can check compliance with your carrier's restrictions and container loading plan. If cartons require special orientation, supply an orientation diagram and ask the factory to mark all cartons accordingly.

Discuss handling instructions explicitly. If cartons need forklift access only from certain sides, or if they are not to be double-stacked, include clear handling marks and note them in your record. For ocean LCL, air freight, or consolidated shipments, ask whether the factory will shrink-wrap pallets or band them and whether pallet overhang exists.

• Planned pallet layout: cartons per layer, layers per pallet, and pallet type
• Stretch wrap, strapping, and overhang details
• Required orientation or stacking limits and factory confirmation

Create a verification package to record and compare

Collect a standard verification package from the supplier before loading: dimension and weight data with measurement method, photos of the filled carton from all sides, a packing diagram, photos of marked faces, and a pallet layout photo or CAD. Store these files with timestamps and supplier sign-off so you can compare pre-shipment claims to the actual goods at port or warehouse.

Define acceptance thresholds in the package. State allowable variances for carton dimensions and gross weight, acceptable cosmetic deviations for marks, and whether any failed stress-test is grounds to delay shipment. Having explicit thresholds converts questions into pass or fail outcomes and makes the next decision , accept, request repack, or hold for rework , simple and auditable.

• Photos: filled carton faces, ruler/scale images, and pallet layout
• Documents: packing diagram, measurement method, ECT or strength data
• Acceptance thresholds for dimensions, weight, and marks

Turn the answers into a decision record and next action

Summarize all supplier responses in one record: declared sizes, weights, board specs, inner protection, mark proofs, pallet plan, and any tests performed. Attach the verification package files and have the supplier confirm acceptance of the record. Use this as your purchase order packing annex or shipping checklist item before issuing final shipment approval.

Decide and document the next action based on the record. Options can include approve shipment, require photo evidence at loading, request a pre-shipment sample to be sent to a third party, or instruct the supplier to correct nonconforming cartons. Specify who on your team will verify arrival measurements and who will escalate packaging defects to the supplier.

Request a single verification package from the supplier that includes measurements, photos, mark proofs, and the pallet plan before you confirm shipment.