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How to Brief a Factory on Mod — Replenishment Cycles

Published 2026-02-19 · 6 min read · by the VapeWholesaleHub sourcing team

Buyers often ask us to explain why two mod samples that look identical behave differently after a month. The answer is almost always tolerance control, and it is more interesting than it sounds.

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

The Specification That Matters

Pay attention to how a mod supplier responds when you ask for a tolerance they do not want to commit to. The hesitation is usually more informative than the eventual answer.

Ask any factory for the same mod sample twice, three months apart. If the second sample drifts, the production line is running without statistical control and your reviews will drift with it. Consistency over time is a more useful signal than a single good sample.

Reference specification for Mod orders
Product categoryOpen system
Resistance band1.0 - 1.2 ohm
Capacity tolerance+/- 2%
Puff count methodDeclared by capacity
Master carton300 units
Carton weight4.1 kg
Shelf life18 months
Storage15-25 C, dry, away from direct light

How Mod Batches Are Checked

AQL sampling gets a lot of attention, but for mod the more useful habit is simply measuring the same three things on every single batch. Trend lines catch problems that pass/fail checks miss.

The cheapest quality control step is a retained sample. Keeping three sealed units from every mod batch costs almost nothing and turns any dispute into a simple comparison instead of an argument over photographs.

Getting Mod to Your Warehouse

Plan the mod customs paperwork at the same time as the order, not when the goods are on the water. A missing document costs more in demurrage than the entire freight saving from a cheap forwarder.

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

Modelling a Healthy Margin

Tiered pricing works best when the tiers match real customer behaviour. Most mod buyers will take the second tier if the step is modest and the third tier only if they can see a genuine reason to hold more stock.

Indicative reference points for planning purposes: entry tier from USD 0.99 per unit at 500 units, mid tier at USD 0.88, and volume tier at USD 1.42 for full container quantities. These figures move with specification, packaging and freight, so treat them as a shape rather than a quote.

Turning Mod Into Repeats

Use your mod staff training time on the two questions customers actually ask. Anything more detailed gets forgotten by the second shift.

A mod display that answers strength and flavour without staff involvement outsells a prettier one that does not. Most customers will not ask, so the fixture has to do the work.

Practical Checklist

Frequently Asked Questions

What is the usual minimum order for mod?

For a standard production run the minimum is normally one master carton per flavour, though mixed cartons can be arranged for a first order. If you are testing the line, ask about a sample pack first and treat the freight as part of your research budget.

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.

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.

What does a sample pack usually include?

A typical mod sample pack covers the strengths or variants you are most likely to list, packed so you can evaluate them side by side. Tell us which lines you are considering and we will match the pack to that rather than sending a generic selection.

Next Step

If you take one thing from this page, take the retained sample habit. It costs a few units per batch and it is the difference between a disagreement and a decision.

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