Manufacturing and quality

Quality control spans structural review, cold pressing, and outgoing tests.

A thin smart card is not simply a board inside an enclosure. Component height, battery, antenna, acoustics, buttons, display windows, potting, and finish must work in one structure.

Yuli builds DFM, pilot, and production checks around the customer-approved product and structure. Responsibilities for ecosystem access, regulatory certification, samples, documents, and certificate ownership are agreed at project start.
Yuli cold-pressed card products, PCBA, and manufacturing review

Cold-Pressed Card Manufacturing

Manufacturing extends from module integration through pilot and production launch.

Yuli uses room-temperature potting and pressing to integrate PCBA, thin batteries, buzzers, buttons, e-paper, NFC/BLE antennas, and sensors into a card structure. Selected projects can avoid product tooling or reduce early tooling investment.

Room-Temperature Cold Press

Reduces heat exposure for batteries, e-paper, and other sensitive modules, with materials and cure conditions defined per project.

Multi-Module Integration

Cold-press DFM covers component height, antenna clearance, sound port, button, display window, and battery position.

Prototype to Production

Supports functional prototypes, pilot builds, process validation, final tests, and production launch; schedule and capacity are confirmed per project.

Six quality gates create six groups of traceable records.

Design and DFM

Review outline, stack-up, height, antenna, acoustics, buttons, windows, and tolerances.

Incoming and PCBA

Check revision, critical parts, appearance, dimensions, and powered function; isolate exceptions.

Potting and pressing

Control mixing, coverage, alignment, pressure, time, cure conditions, and batch records.

In-process inspection

Inspect dimensions, thickness, flatness, windows, edges, finish, and critical function.

Finished-product tests

Run project-defined power, RF, acoustic, display, button, protection, or reliability tests.

Release and change

Verify sampling, packaging, labels, and revision; reapprove functional or structural changes.

Project files and approved samples freeze the production standard.

Before pilot production, confirm drawings, BOM, appearance sample, test methods, sampling, packaging, and change control.