Car Speaker for Changan CS75: Brass
This car speaker for the Changan CS75 is specified around brass, 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 inconsistent hardness between lots, or a fitment that looked right on paper and failed on the bench. Both are specification problems, and both are preventable.

Specification
| Product | Car Speaker |
|---|---|
| Vehicle application | Changan CS75 |
| Material / finish | Brass |
| Typical use | Security Patrols |
| MOQ | 1,000 pieces per specification |
| Sampling | 7 working days, 5 days per revision |
| Bulk lead time | 25-40 days after approval |
| Compliance | SAE J431 |
| Packing | 100 pieces per inner box, 200 per carton |
Material options
- Stainless Steel — preferred when weight matters more than rigidity
- Polypropylene — preferred when weight matters more than rigidity
- Brass — selected when the part is exposed to weather and road salt
- Natural Rubber — specified where the part sits close to a heat source
- EPDM Rubber — chosen where wear resistance comes first

Processes available
- heat treatment
- shot blasting
- ultrasonic cleaning
- precision stamping
- assembly line testing
- cold forging
Fitment notes
Confirm the fitment against the VIN or the frame number before ordering; two model years often share a name and not a part.
Where it is used
The specification above is the one most often ordered for security patrols. Related applications include airport ground fleets, construction sites, wet weather riding, food delivery, heavy load hauling.
Quality and packing
- In-line inspection with AQL 2.5 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
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 1000 pieces per line.
Can the specification be held on file?
Yes. Once approved, the specification is recorded against your part number so a reorder reproduces the SAE J431-compliant build instead of a fresh interpretation.
What happens if a lot fails inspection?
The lot is re-inspected against the golden sample, and replacement pieces ship on the next available booking at our cost.
Send the specification you are working to and we will confirm what we can match, what we would change and why.







