How to Compare Two Corrugated Box Suppliers: A Practical Guide
Two quotations for what looks like the same box can be for two very different products. Here is how to normalise the comparison before you decide.
It is common for a procurement team to receive two quotations for the same box size and assume the comparison is complete once the rate per unit is placed side by side. In practice, two suppliers rarely quote against an identical specification unless you have forced them to, and that gap is where most poor decisions are made.
A fair comparison takes a little more work upfront but avoids a much larger correction later.
Step one: normalise the specification
Before comparing rates, write out the exact ply, flute combination, GSM of each layer and target strength values you want, and send this identical brief to both suppliers. Do not let either supplier propose their own construction unless you are deliberately evaluating alternative designs, in which case compare those on performance, not price alone.
Step two: request test reports, not claims
- Ask for bursting strength and edge crush test values on an actual production batch
- Check whether the figures are from in-house testing or an external laboratory
- Confirm the paper grade (kraft, virgin or recycled content) behind the GSM figure
- Note the date and batch reference on any certificate provided
Step three: treat the sample and the bulk order differently
A sample proves intent, not consistency
A hand-finished sample box can look identical between two suppliers. The real difference shows up in the third or fourth production run, once speed and volume are involved.
Ask each supplier what quality checks apply to bulk production, not only to the sample stage, and whether you can review a batch inspection record from an existing customer's order.
Step four: visit the plant if the order size justifies it
A plant visit reveals more in twenty minutes than a week of correspondence: the condition of the corrugator, how board is stored before conversion, whether finished boxes are stacked and covered correctly, and whether the testing equipment described in the quotation is actually on the floor.
Step five: check capacity and consistency, not just this order
| Comparison point | Supplier A | Supplier B |
|---|---|---|
| Specification quoted against | As briefed | Confirm same brief used |
| Test report provided | Batch-level / sample-level | Batch-level / sample-level |
| Monthly capacity vs your peak volume | State % | State % |
| Lead time, first order / repeat | Days | Days |
Fill this table in with real answers before making a decision. A supplier who answers every row without hesitation, in writing, is usually the one who will hold the specification once the order becomes routine.
See our plant and our test data
We welcome plant visits and share in-house test reports with every serious enquiry.
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