Factory

In-house SMT, assembly and testing for chargers, power banks and charging accessories.

SMT production line at JUN YIN TECHNOLOGY

In-house production

SMT & PCBA under our own roof

Our surface-mount lines place and reflow the PCBs at the heart of every charger and power bank we build. Keeping SMT in-house means tighter process control, faster engineering changes, and full board-level traceability from reel to finished unit.

  • High-speed placement for compact GaN and PD board layouts
  • AOI inspection on every panel
  • Board-level traceability by work order and date code

Final assembly

Assembly lines tuned for power products

Dedicated assembly lines handle housings, key components and final integration for wall chargers, power banks, wireless chargers and hubs. Each station follows documented work instructions, and line changeovers are planned around your delivery schedule.

  • Cell welding and pack assembly for power banks
  • Functional test at every line — no untested unit ships
  • ESD-safe handling throughout
Final assembly line for chargers
Burn-in and reliability testing

Testing & reliability

Tested like it will be used

Power products live or die on reliability. Our lab runs electrical, thermal and aging tests that mirror real-world use — including full-load burn-in for every power SKU before it leaves the line.

  • 100% full-load burn-in for power products
  • Drop, vibration and cable flex testing
  • Protocol compatibility checks across major device brands

OEM / ODM capabilities

What we can build for your brand

Private label

Your logo, your packaging, your manuals — built on proven platforms or fully custom designs.

Custom engineering

Industrial design, PCB layout, firmware and mechanical tooling developed to your brief.

Certification support

Products engineered toward CE, FCC, UL and Qi requirements of your target market, with documentation per project.

Flexible MOQs

Programs sized from pilot runs to mass production — talk to us about your volumes.

Packaging & kitting

Retail-ready packaging, multilingual manuals and bundle kitting handled in-house.

Logistics support

Export documentation, palletizing and freight coordination to your forwarder or door.

Warehouse & logistics

Staged, checked and shipped right

Finished goods are stored by SKU and batch, with outgoing QC before palletizing. We prepare export documentation and work with your forwarder — or arrange door-to-door freight on request.

Finished goods warehouse

See it for yourself

Book a video factory tour or send your RFQ — our engineering team replies within 24 hours.