Car Audio Head Unit for Great Wall Poer: Polypropylene
This car audio head unit for the Great Wall Poer is specified around polypropylene, which decides how it behaves in service far more than the part name does. We build to a written specification — base material, dimensions, finish and packing — and hold that specification on file so every reorder reproduces the approved piece.
The usual reason a programme changes supplier is not unit price. It is a specification nobody had written down, or a fitment that looked right on paper and failed on the bench. Both are specification problems, and both are preventable.

Specification
| Product | Car Audio Head Unit |
|---|---|
| Vehicle application | Great Wall Poer |
| Material / finish | Polypropylene |
| Typical use | Ride-Hailing Fleets |
| MOQ | 2,000 pieces per specification |
| Sampling | 7 working days, 5 days per revision |
| Bulk lead time | 25-40 days after approval |
| Compliance | RoHS |
| Packing | 10 pieces per inner box, 1000 per carton |
Material options
- Brass — selected when the part is exposed to weather and road salt
- Magnesium Alloy — specified where the part sits close to a heat source
- Silicone — the cost-effective default for volume programmes
- Natural Rubber — selected when the part is exposed to weather and road salt
- PU Leather — chosen where wear resistance comes first

Processes available
- die casting
- ultrasonic cleaning
- robot welding
- electroplating
- rubber vulcanisation
- CNC machining
Fitment notes
Keep the old part until the new one is on the bench. Comparing them side by side settles questions a photograph never will.
Where it is used
The specification above is the one most often ordered for ride-hailing fleets. Related applications include security patrols, mountain roads, construction sites, coastal delivery, airport ground fleets.
Quality and packing
- In-line inspection with AQL 4.0 sampling on every lot.
- Dimensional report issued against the approved drawing.
- Carton marking and barcode to your specification.
- Golden sample retained at the factory as the reorder reference.
Questions buyers ask
What is the minimum order quantity?
The standard MOQ is 2000 pieces per specification. Mixed sizes inside one shipment are accepted once the total reaches that figure.
How long does sampling take?
Samples leave the factory in 7 working days, and each revision round adds about 5 days once you have seen the first piece.
Do you handle mixed containers?
Yes. Most programmes consolidate several part numbers into one container to keep freight sensible at 2000 pieces per line.
What testing is included?
Standard lots ship with dimensional and hardness reports. RoHS documentation is issued with the shipment when your market requires it.
Send the specification you are working to and we will confirm what we can match, what we would change and why.







