Configuration review
The device, workload, capacity and application requirements form the supply brief.
Quality & testing
Quality control connects configuration review, production control, finished-card testing, traceability and after-sales support in one supply process.

Connected quality control
Agreed requirements stay connected to finished-card testing, traceability and after-sales support.
The device, workload, capacity and application requirements form the supply brief.
The selected product and order requirements stay connected to the production process.
Capacity, performance and functional checks provide a technical gate before delivery.
Order and batch records support responsive after-sales handling.
Before shipment
Full testing is a standard step for every card we ship. The station shown here is part of our finished-card testing workflow.
Alongside card testing, our camera and dashcam racks run loop recording tests, continuously recording and overwriting earlier footage.
Plan validation in your device
Validation belongs to the device
Sample and small-batch testing before repeat supply
Capacity and performance checks on finished cards
Application inputs connected to the order record
Issue handling supported by order and batch details
Use the device validation checklist failure intake and RMA evidence checklistCompany credential documents
These certificates cover company management systems, not each card’s performance. Open a copy to check its scope and dates.
Tell us the destination market and which product documents you need. We will check which documents apply to the selected card configuration.


Shenzhen Youlen Electronics Co., Ltd. is listed as a member of the SD Association. Shenzhen Youlin Semiconductor Co., Ltd. is listed as a current SD-3C Card License Agreement (CLA) licensee.
Before ordering samples
Yes. Every card is fully tested before shipment. Finished-card checks include bad-block and speed checks.
Read the supply detailsOfficial SD Association member listOfficial SD-3C licensee list
Start with the application
A suitable starting configuration may already be available. Project-specific options can be prepared when needed.
Separate reported capacity, verified storage and brand authenticity.