One roof, four production stages
From bare PCB to a charged EV: SMT, assembly, programming and aging run under one roof in Shenzhen — that is how we keep quality and lead times under control.
SMT & PCBA
High-speed SMT lines place control, metering and communication boards with full AOI inspection at every stage.
Assembly
Enclosure, power modules, cabling and connector assembly on dedicated charging-station lines.
Programming & Calibration
Firmware flashing, metering calibration and OCPP configuration per customer and region.
Aging & Final QA
Every unit runs a 24-hour load aging test and a 40-point final inspection before packing.
Four gates every unit passes
| Gate | What happens | Record kept |
|---|---|---|
| IQC | Incoming inspection of every component batch: PCBA materials, power modules, cables, enclosures | Supplier COC + sampling report |
| IPQC | In-process patrol at SMT, assembly and cabling stations, every 2 hours per line | Patrol log + AOI snapshots |
| FQC | Functional test: insulation, metering accuracy, OCPP handshake, UI, 24h full-load aging | Per-serial test dossier |
| OQC | Outgoing 40-point checklist: appearance, accessories, packing, label and doc verification | Shipment dossier with photos |
Built to scale with you
- AC wallbox capacity: 3,000 units per month
- DC fast charger capacity: 300 units per month
- Engineering samples in 3 days, mass production in 25 days
- Audits welcome — schedule a video or on-site visit anytime
The machines behind the boards
4× SMT lines
High-speed placement with 3D SPI solder inspection.
3× AOI stations
Automated optical inspection on every board, both sides.
Reflow & wave
Profile-controlled soldering for mixed SMT/THT boards.
Test racks
48-channel simultaneous aging racks, 24h full-load.
Every board, every batch, every test
Scan the serial on any EMS-Charge unit and our system returns the full production dossier.
Board batch records
SMT line, reflow profile, AOI results and component reel traceability for every control board.
Test records
Metering calibration, insulation and functional test data stored per serial number.
Shipment dossier
Packaging photos, carton serials and container manifests archived for every order.
Ready to power your market?
Send us your product line, quantity and destination market. Numbers back in 24 hours, samples in 3 days.
Request a quotation