Factory · Zhejiang, China · One test bench

Built where
it is tested.

Six interconnected stages — SMT, COB assembly, firmware burn-in, aging, functional test, packing. Each gate visible from the next, each lot traceable from die to door.

100% unit-level test Lot traceability ESD-safe packaging
Production workshop floor with module assembly stations
Lines · Chips to terminals

One floor, four product classes.

Chip marking and tape/reel, sensor-to-module COB assembly, finished scanners and terminals — the factory is laid out so a design change flows through every downstream station without crossing the street.

  • SMT by fine-pitch class — 0.3 mm pitch-capable placement for compact module PCBs, with reflow profile per product family.
  • COB module benches — sensor and optics placement, wire bonding and adhesive cure for fingerprint and face modules.
  • Terminal assembly — screen mount, faceplate fitting, cable harness and stamping/branding stations for access hardware.

Stations, tools, gates

StationEquipment classWhat it gates
IQCMicroscope-led incoming inspection, ESD metersDies, sensors, optics and PCBA enter the line clean or not at all
SMTFine-pitch mounter, reflow oven, paste inspection0.3 mm pitch class placement; full visual sampling per board
COB assemblyDie/wire bond bench, adhesive cure ovensSensor and imager alignment within module tolerance
Firmware benchProduction jigs with firmware load + checksum100% of units — wrong firmware cannot reach packing
Aging sojournStabilized-soak racks with continuous powerEarly failure survivors only; duration per product standard
Final testEnrollment/compare loops, FAR/FRR audit fixtures100% unit-level functional pass; lot-level recognition audit
PackingESD-safe bags, foam, label-audit benchFlyer, box, bag and lot label checked before courier

Equipment details by line are shared with customers at the sample stage; specific machine vendors are not named — bench evidence beats brand names.

Quality staging and test area
Quality · On the line, not around it

The gate sits on the line.

No batch sampling shortcut, no distant lab: every unit boots production firmware, runs a compare loop and earns a dated pass slip before it is packed. A lot number follows the product from die to door.

  • AOI-style visual checks — camera inspection of PCBA and module seams, glued against a reference image.
  • Trial-level temperature verification — family-class −40~85°C fixtures for AM-series modules; per-lot runs on request.
  • Test report with every mass order — lot-level FAR/FRR audit results ship alongside the goods.

The manufacturing chain

Incoming goods

Microscope and ESD checks on dies, sensors, optics and boards before they touch a line.

SMT

Fine-pitch placement and reflow; paste inspection sample per board family.

COB fit

Sensor/or imager mount, wire bond and cure — alignment inside module tolerance.

Firmware + age

Production firmware load with checksum, then stabilized-soak aging on power.

Full test

100% functional pass plus lot-level recognition-rate audit before packing.

Ship

ESD-safe bags, foam, label audit, lot report — 3–5 days for samples, 10–25 days for mass runs.

Walk the line, or watch it on camera.

Video walkthroughs and live factory calls are arranged before your first mass order — MOQ 1 pc means you can meet the floor early.

Arrange a factory call →