⚡ GaN III fast-charging technology OEM / ODM welcome — low MOQ Worldwide shipping & certification support
Rongjun Electronics facility
About Rongjun

Powering the world's brands, one charger at a time.

We're a GaN fast-charger manufacturer helping companies launch premium, certified charging products — from first sketch to shipped pallet.

2009Founded
200K+Units per month
4,200+m² factory area
300+Team members
Need a different model or wattage? We build custom GaN chargers from 30W to 140W — MOQ 5,000.
Request a Quote
Rongjun factory in Dongguan, China
Our story

Built by engineers, trusted by brands.

Founded in 2009, Dongguan Rongjun Electronics has grown into a 4,200+ m² facility of 300+ people, producing up to 200,000 GaN chargers a month. With self-developed GaN chips and fully automated production, we manufacture for leading brands across Europe, the Middle East and Australia — partnerships we keep strictly confidential.

  • In-house R&D, tooling & production
  • 100% aging & safety tested
  • Full global certification support
See our OEM / ODM services
Inside our factory

From SMT line to shipment — take the tour

SMT workshop
SMT WorkshopAutomated surface-mount PCB assembly
Calibrating SMT equipment
SMT CalibrationPrecision equipment calibration
DIP workshop
DIP WorkshopThrough-hole component assembly
Assembly and packaging workshop
Assembly & PackagingFinal assembly and retail packing
Product aging zone
Product Aging Zone100% sustained-load testing
Sample exhibition area
Sample Exhibition AreaOur full product range on display
Honors and certifications display
Honors & CertificationsAwards and compliance documents
First floor office
First Floor OfficeSales and project management
Second floor office
Second Floor OfficeR&D and engineering team
Second floor office workspace
Engineering WorkspaceDesign, firmware and testing desks
What we value

The principles behind every unit

Quality first

Every charger is tested before it leaves the line — no exceptions, no shortcuts.

Real innovation

We invest in GaN R&D so your products stay ahead of the curve, not behind it.

True partnership

Clear pricing, honest timelines, and a team that treats your launch like our own.

Responsibility

Compliant materials, efficient products, and sustainable, transparent manufacturing.

Transparent. Responsible. Certified.

Certified for the markets you sell to

Every Rongjun product is tested and certified for safety and compliance worldwide.

CCC
China

Compulsory Certification

Mandatory certification for electrical safety in the Chinese market.

CB
International

CB Scheme report

IEC-based report recognized across member countries worldwide.

CE
European Union

EU Conformity

Meets EU safety, health and EMC directives for the EEA.

FCC
United States

FCC compliance

Meets US limits for electromagnetic interference.

UL
North America

UL safety report

Underwriters Laboratories testing for electrical safety.

ETL
North America

ETL listing

Intertek ETL listing for the US and Canadian markets.

RoHS
Materials

Hazard-free

Lead-free, environmentally responsible components.

On request

Custom certification

Additional market-specific marks for OEM/ODM projects.

Ready to source your chargers?

Whether you need our ready-made models or a custom OEM / ODM line, send us your requirements and get a quote within 24 hours.

Request a Quote