Process Guide
Quality Testing For Consumer Electronics
The test equipment behind every-step QC and what each machine catches

Every-Step QC, Not End-Of-Line QC
Our quality control processes include every-step QC and final QC checks to ensure that all goods are of the highest quality before packing. Checking only at the end of the line tells you a batch failed. Checking at every step tells you where.
What Each Machine Is For
| Equipment | What it catches |
|---|---|
| Aging racks | Early-life electrical failures before shipment |
| Battery capacity sorting cabinet | Cells outside the capacity band, before assembly |
| PD test station | Charging and function faults |
| Horizontal and vertical flammability tester | Material behaviour under flame |
| Ball pressure temperature test chamber | Softening of plastics at elevated temperature |
| Mobile phone drop tester | Damage from a single drop onto a hard surface |
| Dual drum drop tester | Cumulative damage from repeated tumbling |
| Falling ball impact tester | Impact resistance of housings and lenses |
| Abrasion wear test machine | Surface wear over a working life |
| Silk screen abrasion resistance tester | Printed logo and legend durability |
| Button life tester | Switch failure over repeated actuation |
| Horizontal plug and pull force tester | Connector retention and wear |
| Wire flexibility tester | Cable failure at the strain relief |
Where Products Usually Fail
In portable audio the failure points are predictable: the cable at the strain relief, the printed legend on a touched surface, the power button, and the housing at the first corner drop. Every one of those has a dedicated machine on this list, because the failure is known in advance and can be designed against.
Certification Held
We hold a CE Certificate of Compliance issued by BCTC under the R&TTE directive 99/5/EC and a RoHS Certificate of Compliance, both covering Bluetooth speaker models ST-871, ST-872, ST-878, ST-861, ST-862, ST-868, ST-851, ST-852, ST-858, ST-821, ST-822 and ST-828, together with a Chinese utility model patent certificate. Certification scope for a new model is agreed per project and per destination market.
What To Ask A Supplier
- Which tests are run in house and which are subcontracted
- Whether QC happens at every step or only at final inspection
- Which certificates cover the exact model number being quoted
- Whether the approval sample is retained as the production reference
- Whether third party inspection is permitted before shipment
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- Download Center — Catalogs and datasheets as PDF
Questions On This Topic
Are the tests run in house?
Yes, on the equipment listed above at our own facility.
Which models do the CE and RoHS certificates cover?
Bluetooth speaker models ST-871, ST-872, ST-878, ST-861, ST-862, ST-868, ST-851, ST-852, ST-858, ST-821, ST-822 and ST-828, as printed on the certificates.
Can we send our own inspector?
Yes. We warmly welcome you to visit us anytime, and third party inspection can be arranged.
Specify It With Us
Send your requirement and we will tell you which platform fits and what has to be tooled.