Home › E-Liquids › Box 4
Warranty and After Sales Guide for Air Bar Box 4
Published 2026 · VapeWholesaleHub trade desk

Warranty and after sales handling define the long term reputation of a Box 4 line.
Distributors reviewing their Box 4 range usually find that warranty and after sales explains most of the variance in results between accounts.
Shops that receive a short briefing on warranty and after sales convert noticeably better than shops that only receive stock.
Why warranty and after sales matters on the Box 4
A clear dead on arrival policy removes friction for retail partners.
In practice the decision comes down to three numbers: unit cost, freight per unit and the realistic sell through rate for Box 4.
Spare parts availability matters more than warranty length in practice.
Reference specification
| Item | Value |
|---|---|
| Model | Box 4 |
| Brand | Air Bar |
| Category | E-Liquids |
| Battery | 1500 mAh |
| Output range | 12-60 W |
| Capacity | 3.0 ml |
| Charging | USB-C 1A |
| Coil options | 0.6 / 0.8 / 1.0 ohm |
| Carton quantity | 100 units |
Tracking return reasons feeds directly into the next sourcing decision.
Practical notes for buyers
Freight consolidation changes the answer to warranty and after sales at container scale, which is why small and large buyers reach different conclusions.
Cash flow is the quiet constraint behind warranty and after sales: the cheapest option is rarely the one that frees the most working capital.
Checklist
- Retain one sealed sample carton from every batch for reference.
- Check carton quantities against the commercial invoice line by line.
- Review the reorder point after one full selling cycle.
- Verify that artwork matches the approved compliance template.
- 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
Payment history is the single most reliable route to better terms, more than total annual volume.
Lead times are a function of component availability as much as factory capacity, so buffers should reflect both.
| Volume tier | Indicative unit level | Lead time |
|---|---|---|
| Carton (131 units) | Tier 1 | 30-45 days |
| Pallet (1591 units) | Tier 2 | 21-30 days |
| Container (16583 units) | Tier 3 | 30-45 days |
Frequently asked questions
What warranty applies to Box 4?
Most suppliers cover manufacturing defects for a defined period, excluding consumables and physical damage.
Is documentation provided for customs?
Commercial invoice, packing list and the relevant certificates are supplied; the importer's broker handles the declaration.
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.
Final word
None of this is complicated, but it does need to be written down and reviewed on a schedule.
Trade enquiry
Quotations, samples and artwork files are available on request. Please state model, quantity per SKU, destination and target delivery window.