About Us
Shenzhen-based OEM/ODM manufacturer focused on mobile charging.
Who we are
A manufacturer, not a middleman
JUN YIN TECHNOLOGY is a Shenzhen-based OEM/ODM manufacturer focused on one thing: mobile charging. Wall chargers, power banks, wireless chargers, hubs, cables and portable power — designed, built and tested under our own roof.
We work directly with brands, retailers and distributors across Europe and North America who need a factory that understands both engineering and compliance.
Engineering first
Built by people who sweat the details
Our engineering team owns the full stack — circuit design, PCB layout, firmware, mechanical tooling and protocol compatibility. That depth is what lets us take a rough brief and return a shippable product.
- Full-stack product development: ID, electronics, firmware, tooling
- Protocol expertise: PD, QC, PPS, Qi2
- Compliance-led design for EU and US markets
How we work
Three principles, every order
Quality is the spec
Four QC gates, full-load burn-in and batch traceability aren’t extras — they’re how every unit ships.
Engineering honesty
If a brief can’t be built reliably at your target cost, we’ll tell you before tooling — not after.
Buyer-first communication
Direct engineering contact, clear timelines and proactive updates. No black boxes.
Let’s build your next charging product
Send a brief, a sample or just an idea — we’ll take it from there.