
Full Turnkey Solutions
From concept to mass production -- design, tooling, molding, assembly, and QC all in-house.
Shenzhen Kerui Electronics - A professional manufacturer with 15+ years of experience, specializing in private mold TWS Earbuds, Cooling & Heating Fans, Power Banks and Smart Wearables. One-stop service from design, production to global export.
OEM/ODM support for selected 3C electronics, from earbuds to smart devices.


From logo and packaging customization to product appearance and functional development, we help brands, wholesalers, and distributors build market-ready 3C products.
Multiple printing & engraving options for branding your products.
Wide selection of colors, materials & ergonomic designs to match your brand.
Retail-ready packaging with sustainable and premium materials.
Custom firmware & advanced features for unique products.

From concept to mass production -- design, tooling, molding, assembly, and QC all in-house.

ISO-standard QC, CE/FCC/RoHS certified, ensuring stable supply & top-notch quality.

500+ skilled staff across injection, assembly, QC, and testing -- delivering reliable results.
With 15+ years of electronics manufacturing experience, we support stable bulk production, quality control, and certification requirements for global B2B buyers.
International quality management standard ensuring consistent product excellence and process control.
Full compliance with EU, US, and environmental regulations for seamless global market access.
We support wholesalers, distributors, and brand owners with bulk order planning, OEM/ODM customization, and long-term supply cooperation.
13 production lines, 30+ injection machines, and 4M+ annual production capacity support scalable orders.

A clear process for product selection, customization, sampling, bulk production, quality control, and delivery.
Send your requirements. Our sales team responds within 24 hours with solutions and quotations.
Customize appearance, logo, and features. Engineering team refines design to your specs.
Sample schedule depends on model availability and customization details.
Full production with ISO-standard QC. Real-time updates and batch testing throughout.
Shipping support is available based on destination, order volume, and trade terms.
Ready to start your custom project? Our team is here to guide you through every step.
Request Project QuoteReady to scale your business? Contact our professional sales team for a consultation and quotation.