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Air Bar Nex 4 Quality Control Process for Bulk Buyers
Published 2026 · VapeWholesaleHub trade desk
Quality control is where a Nex 4 order either protects or damages downstream relationships.
Across the trade, quality control process is the point where good intentions meet operational reality on the Nex 4.
In practice the decision comes down to three numbers: unit cost, freight per unit and the realistic sell through rate for Nex 4.
Why quality control process matters on the Nex 4
Incoming inspection sampling catches most issues before they reach shops.
Documentation is not paperwork for its own sake; on quality control process it is the difference between a clean clearance and a delayed one.
Functional testing of a sample from each batch is standard practice.
Reference specification
| Item | Value |
|---|---|
| Model | Nex 4 |
| Brand | Air Bar |
| Category | Box Mods |
| Battery | 650 mAh |
| Output range | 10-80 W |
| Capacity | 4.0 ml |
| Charging | Magnetic dock |
| Coil options | 0.6 / 0.8 / 1.0 ohm |
| Carton quantity | 200 units |
Documented defect rates make supplier conversations objective.
Practical notes for buyers
In practice the decision comes down to three numbers: unit cost, freight per unit and the realistic sell through rate for Nex 4.
The most common mistake is optimising for the first order instead of the fourth, which is where Nex 4 economics actually settle.
Checklist
- Verify that artwork matches the approved compliance template.
- Keep certificates current and filed against the exact model name.
- Check carton quantities against the commercial invoice line by line.
- Confirm the exact configuration in writing before the deposit is paid.
- Agree in advance who pays for return freight on a defect claim.
- Request batch photographs and a packing list prior to shipment.
Commercial terms
Commercial terms are usually agreed in three parts: a deposit on confirmation, a balance before shipment and a stated validity window.
Commercial terms are usually agreed in three parts: a deposit on confirmation, a balance before shipment and a stated validity window.
| Volume tier | Indicative unit level | Lead time |
|---|---|---|
| Carton (115 units) | Tier 1 | 21-30 days |
| Pallet (1542 units) | Tier 2 | 21-30 days |
| Container (14770 units) | Tier 3 | 7-12 days |
Frequently asked questions
What defect rate is acceptable for Nex 4?
Industry practice works to a low single digit per thousand, with dead on arrival units replaced.
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.
How quickly can a repeat order be produced?
For established configurations production typically runs two to four weeks, with transit on top depending on the chosen method.
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.
Final word
A short quarterly review of these points will keep the Nex 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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