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Wholesale Guide

Mod Emissions and Leak Testing Methods — a Factory Floor View

Published 2026-08-21 · 7 min read · by the VapeWholesaleHub sourcing team

Mod has moved from a niche listing to a category that most vape retailers simply have to carry. That popularity brought a flood of near identical offers. This guide explains how to separate a repeatable supply chain from a lucky sample.

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

How Mod Fits the Assortment

Category data for mod is noisier than it looks. Promotions, weather and local competition all move weekly numbers, so read three months at a time rather than reacting to a single week.

The Specification That Matters

Good mod specs describe the failure boundaries, not just the target. Stating what is unacceptable gives the factory a clear production window instead of a single point they will miss half the time.

Reference specification for Mod orders
Product categoryDisposable
Resistance band0.8 - 1.0 ohm
Capacity tolerance+/- 5%
Puff count methodMachine cycle 3s on / 27s off
Master carton200 units
Carton weight8.1 kg
Shelf life24 months
Storage15-25 C, dry, away from direct light

How Mod Batches Are Checked

Keep a photo record of every mod approval sample. Written descriptions age badly; a dated photograph next to a delivered unit settles most arguments in seconds.

Selling Mod at Store Level

Online, shoot mod at a consistent scale across the range. Customers compare by eye, and inconsistent product photography creates returns that have nothing to do with the product.

Trends Worth Watching

Demand for mod has been steadily rebalancing. The early phase rewarded whoever could ship fastest; the current phase rewards whoever can ship the same thing twice. That shift favours buyers who invest in specification rather than price shopping.

Logistics That Protect Margin

Air freight makes sense for a first mod order when you need to test demand quickly, but almost every steady programme moves to sea freight once volumes stabilise. Planning that switch early avoids a painful margin squeeze later.

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

Practical Checklist

Frequently Asked Questions

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 you match an existing product I already sell?

Often yes, provided we can measure it properly. Send a physical sample and we will report back on what can be matched, what will differ slightly, and why. An honest gap is more useful than a vague promise.

What if I only need a small first order?

That is normal and sensible. A mixed carton lets you test mod in your own market before committing to a production run, and the specification you approve at that stage carries through to larger orders unchanged.

What information do you need to quote?

Target specification, approximate quantity, destination and any packaging requirement. With those four we can usually come back with a costed option the same working day rather than a request for more information.

How should mod be stored?

Cool, dry and out of direct sunlight. Heat and light are the two things that shorten shelf life fastest. Rotate stock by batch code rather than by arrival date, and keep cartons off concrete floors in humid warehouses.

Next Step

Whatever you decide, decide it against numbers you can check on arrival. That single discipline removes most of the risk from importing mod.

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