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Air Bar Box 4 Quality Control Process Checklist 2026
Published 2026 · VapeWholesaleHub trade desk
Quality control is where a Box 4 order either protects or damages downstream relationships.
Buyers who treat quality control process as a commercial discipline rather than an afterthought tend to hold margin for longer.
The most common mistake is optimising for the first order instead of the fourth, which is where Box 4 economics actually settle.
Why quality control process matters on the Box 4
Incoming inspection sampling catches most issues before they reach shops.
Freight consolidation changes the answer to quality control process at container scale, which is why small and large buyers reach different conclusions.
Functional testing of a sample from each batch is standard practice.
Reference specification
| Item | Value |
|---|---|
| Model | Box 4 |
| Brand | Air Bar |
| Category | Vape Pens |
| Battery | 500 mAh |
| Output range | 10-60 W |
| Capacity | 6.0 ml |
| Charging | USB-C fast charge |
| Coil options | 0.4 / 0.6 ohm |
| Carton quantity | 100 units |
Documented defect rates make supplier conversations objective.
Practical notes for buyers
Documentation is not paperwork for its own sake; on quality control process it is the difference between a clean clearance and a delayed one.
Keeping a short internal note on quality control process for each SKU pays for itself the first time a dispute arises over the Box 4.
Checklist
- Request batch photographs and a packing list prior to shipment.
- Record the arrival condition with photographs on the day of delivery.
- Keep certificates current and filed against the exact model name.
- Confirm the exact configuration in writing before the deposit is paid.
- Agree in advance who pays for return freight on a defect claim.
- Check carton quantities against the commercial invoice line by line.
Commercial terms
Agreeing a defect handling procedure before the first shipment removes emotion from later conversations.
Volume commitments work best when they are structured as a rolling target rather than a single fixed number.
| Volume tier | Indicative unit level | Lead time |
|---|---|---|
| Carton (83 units) | Tier 1 | 21-30 days |
| Pallet (1731 units) | Tier 2 | 30-45 days |
| Container (17554 units) | Tier 3 | 30-45 days |
Frequently asked questions
What defect rate is acceptable for Box 4?
Industry practice works to a low single digit per thousand, with dead on arrival units replaced.
Can several models be mixed in one shipment?
Yes, mixing models and flavours within a carton or pallet is common and usually helps first time buyers test demand.
Do you support long term supply agreements?
Yes, rolling agreements with defined review points work better for both sides than rigid annual commitments.
What happens if a batch fails inspection?
The agreed procedure normally covers replacement of affected units or credit against the next order, documented before shipment.
Final word
A short quarterly review of these points will keep the Box 4 range healthy without consuming the week.
Trade enquiry
Quotations, samples and artwork files are available on request. Please state model, quantity per SKU, destination and target delivery window.
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