Wholesale AC DC Power Adapter Manufacturer in China and Vietnam

  Power adapter manufacturer with over 20 years of experience
  Two factories in China and Vietnam, delivering flexible production
  Fully automated production lines, fast delivery time
  Customizable features: Logo, Material, design, color, packaging
  Certified with FCC, REACH, UL, CE, ROHS, and various other relevant certifications, and successfully cleared factory inspections.
  Made of sustainable materials for an environmentally-conscious AC DC power adapter

About Us

Sunshine Electronics: Your Trusted Partner

Sunshine Electronics is an AC adapter manufacturer with over 20 years of industry experience. We have factories in both China and Vietnam, and our extensive industry expertise attests to our strength.
Our product range includes plug wall adapters, laptop power adapters, and USB C power adapters. Simultaneously, we offer OEM and ODM services, catering to your needs whether you want a switching adaptor for LED lights, batteries, TVs, computers, monitors, cameras, or a portable travel adapter. Whether you want to design from scratch or modify existing products, we can meet your requirements.
We can provide output power for adapters ranging from 5W to 140W, with output voltages from 5V to 24V. Additionally, we can supply power adapters with various plug types suitable for different countries, including but not limited to EU plugs, US power plugs, Mexico plugs, Australia plugs, Japan plugs, and more.

We have great confidence in the quality of our power adapters. All our adapters undergo testing using advanced equipment, including CHROMA series testing devices, CHROMA comprehensive testing operating systems, FLUKE testing equipment, and others.

In terms of after-sales service, we have a professional team dedicated to addressing your concerns. You don't have to worry – our over twenty years of experience is a testament to our strength as a manufacturer. Contact us, and you will have a unique experience.

External AC/DC Power Supplies Factory

AC DC Power Adapter Manufacturing Process Diagram

Please click on the dots on each small picture to see the details.

Our Advantages of Power Adapters

①OEM(Original Equipment Manufacturer) / ODM(Original design manufacturer)

Highly Experienced R&D team and laboratory

We leverage our extensive industry experience, in-depth knowledge of the sector, and research and development successes in China, alongside the cost-effective production capabilities, rigorous quality management system, adaptable delivery services, and diverse sourcing options in Vietnam. This strategic combination allows us to enhance our ODM/OEM services for our valued customers.

All units have been 100% burn-in tested

Whether you need custom power adapters designed from scratch or wish to modify existing products, we possess the capabilities and experience to deliver results that exceed your expectations.


refers to products fully designed by one company and then licensed to a manufacturer to produce.


OEM designers could meet customers' needs according to their design requirements to occupy a market share in the industry.The designer retains total creative control over the design.


often known as "private labeling," involves an importer choosing an existing product design from a factory catalog, making minor modifications, and then marketing it under their brand name. These modifications may encompass alterations to packaging, product bundles, colors, branding, and limited adjustments to components or functionality.


ODM requires less start-up capital, scalability, regulatory compliance, and access to manufacturing expertise making it a practical choice for businesses aiming to bring products to market efficiently and cost-effectively.

②Certificate of Origin

Flexible Strategy at Sunshine in China and Vietnam

Our two production bases in China and Vietnam provide flexible production, delivery, and optimized costs.

A certificate of origin is a document that specifies the country in which a product or goods were manufactured, produced, or processed. The certificate typically includes information about the product's manufacturer or producer, and the specific country where it was made.

Add Your Logo or Brand Mark

Enhance your product design by seamlessly incorporating your branding into the power adapter. We collaborate with you to identify the optimal placement for your logo, whether it involves integrating it onto the adapter's label or applying it to the case using techniques such as etching, embossing, or silk screening. Our goal is to work together to ensure your adapter truly embodies your company's identity and brand.

Variations in Case Colors, Styles, and Textures

We can align the color and texture of your adapter's case with your design.

Custom Packaging

You can gain full control over every element of your product's presentation, including packaging. Whether you prefer environmentally friendly options with no plastic or custom materials, complete with branded labels, we are here to assist in preparing your product for the end consumer.

④Free Mold

You can experiment with new product designs and prototypes with minimal financial risk.Offering free molds can significantly reduce your initial expenses, expedite the production process, and lower your overall business risk. This means you can allocate your resources more efficiently and get your products to market faster, ultimately giving you a competitive edge in the industry.

⑤Free Samples

You have the opportunity to experience the quality of our products. We aim to provide you with the chance to try and assess the product before making a purchase, ensuring that you are completely confident in your decision.

⑥Door-To-Door Service

We provide end-to-end support for your entire product journey
Our door-to-door service simplifies your international trade, offering control, transparency, simplicity, cost and time savings, reliability, and risk reduction.

⑦Quality Assurance

You do not worry about overheating anymore.It is made from the highest quality materials, it will have automatic overload cut-off, Voltage cut-off, automatic thermal cut-off, and short circuit protection.
All products pass through ISO9001, TL9000-H, ISO27001, ISO14001, and other quality system certifications.

⑧Warranty Coverage

Your safety and satisfaction are paramount.
  • Quick and Tailored Support: Each inquiry is managed by a specialized team that oversees the entire journey, starting from providing quotes to delivering products right to your doorstep.
  • Pre- and Post-Purchase Assistance: We assure the safe arrival of our power adapters with secure packaging. Our customer support extends both before and after the sale, ensuring assistance whenever you encounter any difficulties or uncertainties.
  • Diverse Warranty Options: Every electronic project comes with unique protection requirements, which is why we provide a range of flexible warranty choices to cater to your specific needs.

Why Choose Us?

Power Adapter Factory in Vietnam and China

Warehouse And Factory
Skillful Workers
Yearly Manufacturing Pcs

Vietnam Factory

Configuration of Production Hardware

In our Vietnam factory, Sunshine has 17 production lines. To ensure efficient production, uniform quality, and standardized processes, we have replicated our production lines in China: automated production equipment, high-end testing equipment, robotic operations, etc., and have expanded our production scale.

Production Equipment

We have high-end automated production equipment and testing equipment in the industry, as well as a production management team, quality management team, equipment management team, and ERP warehouse management team with systematic management theories.

Cost Optimization

In our Vietnam factory, the flexible working system we have adopt makes us more flexible for our customers' shipping needs. Based on the advantages of the China factory and Vietnam factory, we have been able to better optimize the cost control of our products, from raw material costs, logistics costs, and manufacturing costs. We have been able to achieve price optimization utilizing merit-based adoption, cost-cutting control, and labor efficiency control, to save our customers a reasonable price space to enhance our mutual performance with our customers.

China Factory

Configuration of Production Hardware

Sunshine has three main types of workshops, namely the power adapter production workshop, cable electronics production workshop, and various plastic accessory production workshops. To achieve a first-class production environment with high manufacturing efficiency, uniform quality, and standardized processes, we have introduced advanced production automation equipment, high-end professional testing equipment, central control settings, various types of robotic operations, and other production equipment, and adopted standard industry workshop settings, etc. Quality management is in line with ISO9001 and ISO14001 quality system certifications.

Development of Quality Theory

From production and quality management systems, we have invited professionals with experience in quality control (Six Sigma Black Belt level) from the world's top 500 companies to act as consultants in our factories and to provide professional training to quality control staff and other management personnel. We draw on the world's most advanced quality management concepts, production management systems, management practices, and so on while providing occasional business training for frontline production staff.

Implementation of System Management

We use an ERP management system to achieve a series of management modes of purchasing, storage, production, and after-sales, to control the quality of incoming materials, cost control of materials, time management of production and shipment, production efficiency and quality straight through rate, traceability of finished materials, etc. to carry out data management to solve the problems that customers are concerned about and need to solve.


Product Certified

Company Qualified

Lab We Work With


Consult Your Sunshine Experts

We help you avoid the pitfalls to deliver the quality and value your Power adapter, charger, bulk cable need, on-time and on-budget.

Contact Info

Tel: 0086-519-85203588; 85156667 ext 8001
Sunshine Electronics & E-KEY Electronics


Why Sunshine



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Time: April 9th to April 12th 2024
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