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How to Source Air Bar Diamond 4: Returns and Credit Notes
Published 2026 · VapeWholesaleHub trade desk

A clear returns and credit process on Diamond 4 protects the relationship when something goes wrong.
Wholesale demand in this category is driven less by novelty than by consistency, and returns and credit notes is where that consistency is measured.
Cash flow is the quiet constraint behind returns and credit notes: the cheapest option is rarely the one that frees the most working capital.
Why returns and credit notes matters on the Diamond 4
Distinguish between a defect claim and a change of mind before agreeing any action.
Cash flow is the quiet constraint behind returns and credit notes: the cheapest option is rarely the one that frees the most working capital.
Credit notes should reference the original invoice line to keep accounting clean.
Reference specification
| Item | Value |
|---|---|
| Model | Diamond 4 |
| Brand | Air Bar |
| Category | Pricing |
| Battery | 650 mAh |
| Output range | 10-30 W |
| Capacity | 5.0 ml |
| Charging | USB-C 2A |
| Coil options | 0.8 / 1.2 ohm |
| Carton quantity | 120 units |
Agreeing who pays return freight in advance avoids most disputes.
Practical notes for buyers
Freight consolidation changes the answer to returns and credit notes at container scale, which is why small and large buyers reach different conclusions.
Cash flow is the quiet constraint behind returns and credit notes: the cheapest option is rarely the one that frees the most working capital.
Checklist
- Confirm the exact configuration in writing before the deposit is paid.
- Check carton quantities against the commercial invoice line by line.
- Verify that artwork matches the approved compliance template.
- Log sell through by account for the first eight weeks.
- Agree in advance who pays for return freight on a defect claim.
- Record the arrival condition with photographs on the day of delivery.
Commercial terms
Lead times are a function of component availability as much as factory capacity, so buffers should reflect both.
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 (148 units) | Tier 1 | 7-12 days |
| Pallet (1272 units) | Tier 2 | 7-12 days |
| Container (17260 units) | Tier 3 | 30-45 days |
Frequently asked questions
Who pays return freight on a Diamond 4 defect claim?
For confirmed defects the supplier normally covers it; agreeing this in writing before shipment prevents arguments.
Can packaging be adjusted for our market?
Artwork localisation is straightforward; structural changes need larger volumes and a longer lead time.
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 Diamond 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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