Wholesale Guide

Mod Emissions and Leak Testing Methods — First-Time Importers

Published 2026-02-16 · 7 min read · by the VapeWholesaleHub sourcing team

We ship mod to distributors in very different markets, and the same five questions come up almost every week. Rather than answer them in email each time, we have written them out properly here.

Mod product overview — Reference view of the mod line prepared for wholesale evaluation.

Getting Mod to Your Warehouse

Ask your forwarder for the mod transit history on your lane, not the advertised schedule. The gap between the two is the buffer you should build into your reorder point.

Model mod freight both ways before choosing a method: cost per unit and cost per week of delay. The second figure is the one that decides whether a cheap option was actually cheap.

Mod logistics and packing — Master carton configuration used for mod shipments.

Pricing and Margin

Margin on mod is rarely lost at the till. It is lost through dead stock, returns and emergency air freight. A slightly higher landed cost with predictable lead time usually beats the cheapest quote on the spreadsheet.

Indicative reference points for planning purposes: entry tier from USD 1.46 per unit at 1000 units, mid tier at USD 1.50, and volume tier at USD 1.30 for full container quantities. These figures move with specification, packaging and freight, so treat them as a shape rather than a quote.

Where Demand Is Heading

Expect mod packaging requirements to keep tightening. Designs that leave room for additional labelling age better than tight layouts that need a full reprint to comply.

How Mod Fits the Assortment

Category planning for mod works best when you map it against three shopper types: the restocker who already knows what they want, the switcher who wants something stronger, and the explorer who buys on flavour name alone.

Range decisions for mod should start from shelf space, not from a supplier catalogue. Count the facings you actually have, then decide how many of them this line deserves against what it currently earns.

Turning Mod Into Repeats

Put mod where the decision is made, not where the margin is highest. In most stores that means near the counter or at eye level in the category, rather than wherever there is spare space.

Bundle mod with a complementary item rather than discounting it outright. The perceived value holds up better and the second item often becomes a repeat purchase on its own.

Reading a Mod Spec Sheet

Ask for the mod specification in the same units you intend to measure in. A metric quoted in a form you cannot verify on arrival is not a specification, it is a claim.

Reference specification for Mod orders
Product category	Open system
Resistance band	1.0 - 1.2 ohm
Capacity tolerance	+/- 2%
Puff count method	Machine cycle 3s on / 27s off
Master carton	120 units
Carton weight	3.8 kg
Shelf life	24 months
Storage	15-25 C, dry, away from direct light

Practical Checklist

Rotate stock by batch code rather than by delivery date.
Start with a mixed carton and let your own sell-through decide.
Check carton dimensions against your freight quote before confirming.
Confirm the current customs classification with your own broker.
Keep sealed retained samples from every production batch.
Ask how the factory measures puff count, then compare like with like.

Frequently Asked Questions

Can I visit the production facility?

Yes, and we encourage it for larger programmes. Visits are most useful when you already have a draft specification, because you can then check the specific processes behind the numbers you care about.

Do you hold stock for regular customers?

For established programmes we can reserve production slots and, in some cases, hold finished mod stock against a forecast. It removes most of the lead time risk from a reorder and is worth discussing once volumes are stable.

What happens if my market changes its rules?

Regulations move, and packaging or documentation sometimes has to follow. We keep approved artwork files on hand so that a required change is a reprint rather than a redesign, which keeps the cost and delay down.

Is there a warranty on mod?

Manufacturing defects are covered against the retained sample standard. Normal wear, misuse and damage after opening are not. We publish the threshold in the order terms so both sides know exactly what the claim process looks like.

Can the packaging be customised?

Yes. Most mod programmes use private label packaging once volumes justify the printing plate. We supply dielines, check your artwork for print issues and hold approved files so reorders need no new setup.

Next Step

If you are comparing options right now, send us the specification you have been quoted elsewhere. A side by side reading usually shows where the price difference actually comes from, and that is the most useful first conversation to have.

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