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

Power Adapter Manufacturer

Low-noise, smart, fast, efficient, reliable, and high quality power adapters are essential in cars, laptops, industries, and medical devices. Our broad range of cost-effective AC-DC power solutions includes flexible, configurable, and custom power adapters. Power adapters, also known as power supply adapter, ac adapter power supply, ac power adapter. It is a type of external power supply. 
Sunshine Electronics is a professional OEM power adapter manufacturer, owning a high reputation in this industry. Sunshine manufactures Wall Mount Power Adapters, USB C Power Adapter, Travel Power Adapters,  and Laptop Power Adapters, provideing you with ODM&OEM services. Universal AC to DC power adapters by Sunshine are all at attractive wholesale prices and can be used for multi-purposes, like xps, nintendo switch, xbox, camera, TV. Available output voltage: 5V, 5.9V, 6V, 9V, 12V, 15V, 20V, 24V, 30V, 48V, etc. For Watts: 5W, 10W, 12W, 18W, 20W, 30W, 35W, 45W, 65W, 85W.

Power Adapter Types

Based on Different Input, Output & Standard, Sunshine Could Supply Below

AC/DC switching power supply AC/DC switching power supply

Switching Power Supply can switch 220V / 110V to 1V-96V for use.
Provide current protection, constant voltage, constant current…etc relative to electric reliability.
Provide AC pins including UL, EU, SAA, UK & CN for common use.
Input range: 110V – 240V

Power Adapter Output Wattage

5W Power Adapter Series Type
6W Power Adapter Series Type
7.5W Power Adapter Series Type
10W Ethernet Power Adapter Series Type
12W Power plug Adapter Series Type
15W Power Adapter Series Type
18W USB Power Adapter Series Type
20W USB-C Power Adapter Series Type
24W Power Adapter Series Type

30W USB-C Power Adapter Series Type

30W USB C Power Adapter Series Type
35W dual USB-C port Power Adapter Series Type
45W Power line Adapter Plug Series Type
48W dc Power Adapter Series Type
50W Power supply Adapter Series Type

61W USB C Power Adapter Series Type
65W Laptop Power Adapter Series Type

67W USB-C Power Adapter Series Type
75W AC Power Adapter Series Type
80W Power Adapter Series Type

96W USB C Power Adapter Series Type

140W USB-C Power Adapter Series Type


Power Adapter Output Voltage

5V Power Adapter Series Type
5.9V Power Adapter Series Type
6V Power Adapter Series Type
9V Power Adapter Series Type
12V Power Adapter Series Type
15V AC DC Power Adapter Series Type
20V Power Adapter Series Type
24V Power Adapter Series Type
30V Power Adapter Series Type
48V Power Adapter Series Type


Universal Power Adapter

Europen power adapter
Australian power adapter
USA power adapter
Germany power adapter type
Italy power adapter
Canada power adapter
Israel power adapter
London power adapter
Swiss power adapter
Brazil power adapter
Vietnam power adapter
Indonesia power adapter
Malaysia power adapter
South korea power adapter
Philippines power adapter
Japan power adapter
Thailand power adapter
India power adapter

Still not finding what you're looking for?
Contact our consultants for more available products.

AC/DC Power Adapters for High Performance Application

Designed, certified, and approved for a broad range of international power adapter requirements. When reliable performance is critical, you need a power adapter solution that will give you high efficiency, accuracy, stability, and repeatability. Our direct wholesales and technical support teams work with you from the design phase and throughout the entire life-cycle of your portable adapter power supply.

Our AC to DC power adapter portfolio is designed and approved for various use, such as tablet PC, LED displays, LED hard and soft light bars, mobile DVDs, EVD, ADSL, POS machines, multimedia set-top boxes, LCD monitors, small home appliances, battery charger, video phone, portable computer, satellite receiver, digital photo frame, computer peripherals, instruments, electronic game machine, hub, mobile communication equipment, bank data equipment, alarm equipment, medical equipment communication equipment, industrial appliances, security engineering, monitoring systems, and other fields.

Our Advantages of Power Adapters

Our professional power adapter manufacturing processes are streamlined, standardized, and rigorous to guarantee that we can always provide high-quality USB C power adapters to all our customers. 
We adopt machines with highly Validated and Recognized test equipment brands in our laboratories and production workshop, such as FLUKE, Chroma, YOKOGAWA, LECROY, TESEQ, and GwinSTEK which stand for the highest and strictest standards with strong recognition in this industry of universal power adapters. 
At first, in terms of materials of fast charge power adapters, they should conform to the standards of RoHS, Reach, California 65 Act, and Red Phosphorus free. Then, all power adapters will follow a series of verification, more than 60 tests including high and low temperature cycle test, high and low temperature hot wash test, salt spray test, drop test, roller test, unplugging endurance test, fire test, lightning strike test, anti-static test, etc. At last, before dispatching and packaging, all portable adapter power supply must pass another series of product verification, such as UL &CUL, FCC, DOE, CE, and NRCan.

8 Protection Functions

AC DC Power Adapter Manufacturing Process Diagram

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

How to Use a Power Adapter

When using a DC wall mount power adapter with a USB Type C port, firstly, you need to check the voltage and current your device need. Make sure your 3-prong or 4-pin AC power adapter's current and voltage are suitable for your devices. High or Low voltage and current may cause many bad effects.

Secondly, check the power adapter connector diameter that your devices need. The most commonly used connectors are 5.5*2.1*10mm, 5.5*2.5*10mm or 3.5*1.35*10mm.

Thirdly, choose the right AC DC power adapter polarity, there is positive polarity and negative polarity. If you reverse the polarity, there is the possibility that your devices will be damaged. After confirming the power adapter is surely compatible with your device, just connect the power adapter device and power socket.

Related Applications

Consumer Electronics
Consumer electronics refers to any electronic devices designed to be purchased and used by end users or consumers...
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Household Appliance
A home appliance also refers to as a domestic appliance, an electric appliance or a household appliance is a machine...
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A car charger is a device connecting to an electronic device such as a cell phone or MP3 player to charge the battery...
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Medical Machine
Healthcare manufacturing needs to meet an exceptionally high level of safety approvals. Our power supply, power adapter, charger, and cable...
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Power Adapter Factory in Vietnam and China

Warehouse And Factory
Skillful Workers
Yearly Manufacturing Pcs

AC DC Power Adapter & Switching Power Supply Supplier in China and outside China--Vietnam

Sunshine Electronics could provide ODM/OEM manufacturing services for you to choose from our best travel power adapter, small usb power adapter, ac adapter power supply, laptop power adapter, and car power adapter, as we have two factories in China and outside China--Vietnam to fulfill your needs with a high quantity.
Sunshine Electronics has been working as a trustworthy power plug adapter manufacturer and supplier in China and outside China--Vietnam for almost 20 years. During the period of those manufacturing years in the field of power adapters, we gain abundant experience about Ethernet power adapter and Coaxial power adapter. We can guarantee that all our AC/DC power adapters are produced with high quality in China and Vietnam. Besides manufacturing power adapters, we also offer customization and design services to you. We have USB C power adapters in a variety of colors, shapes, and sizes.

Sunshine is shilled in OEM&OEM production strategy, We have been working with companies of different sizes who are looking for high-quality and 100% USB C power adapters, AC power adapters, and power plug adapters in bulk and wholesale power supplies. We have been supplying universal power adapters of different specifications wholesale. We are capable to provide bulk power adapters in different shapes and sizes, even labeling services of USB C power adapters and packaging for power adapters.

Vietnam Factory

China Factory

Why Choose Us?


Product Certified

Company Qualified

Lab We Work With

Wholesale Power Adapters in Bulk

We have flexible production and dispatching services from China and outside China--Vietnam. Sunshine Electronics has become one of the most well-trusted charger power adapter manufacturers and suppliers in both China and outside China--in Vietnam. We are available to provide two production lines for AC power adapters in China and Vietnam at the same time, which means not only we could supply power supply in bulk to meet your high-volume requirements, but also you could decide whether to dispatch your AC/DC power adapters from China or Vietnam. The most important factor is that USB C power adapters produced in China and Vietnam are all of high quality, and the specifications of AC power adapters in China and Vietnam are all the same.

Sunshine Electronics wholesale universal power adapters in bulk and could provide custom labeling and packaging designs for you to boost your company. Power adapters are welcomed by most young customers as AC/DC power adapters are faster, smaller, and more portable for you.

Custom Switching Power Adapters at Sunshine Electronics

As one of the professional USB C power adapters with dual travel ports making companies in China and outside China--Vietnam,Sunshine Electronics can customize power adapters for our clients. Not only do we manufacture power adapters but we can also design AC power chargers, store power chargers, and ship power adapters for you. You could choose where to despatch your power adapters. So, if you are searching for a reliable USB C power adapter manufacturer, our company would be your best pick for power adapters because we have the following advantages:


Power Adapter Sizes

Our power adapters are designed in different sizes to give you a variety of quality options to choose from. We currently stock AC power chargers with different appearances.


Power Adapter Shapes

Our AC/DC power adapters are manufactured with one specific high-quality shape standard to help provide our customers with the best service. The USB C power adapters are produced in various shapes to meet your needs.

Power Adapter Colors

Our USB C power adapters are currently available in several kinds of colors according to your demands and favorites. Additionally, our design team is always available to help you find the perfect color for power adapters if you have trouble making a final decision about your AC power adapters.


Power Adapter Labeling Services

Our power adapters are designed to cater to your special wants if your need to add your trademarks on the surface of power adapters. We offer decoration and labeling services to spruce up AC/DC power adapters according to your specific requirements.

OEM&ODM Power Adapter

Sunshine manufactures different Power adapter plug, like US/EU/UK/AU/KC, we surely could meet your requirements.


Power Adapter Packaging

Our AC/DC power adapters could be packed with a variety of packages to give you more choices when purchasing. Some of the power adapters packaging we work with include color boxes, color display boxes, window boxes, mailboxes, and custom packages depending on the exact design of best universal power adapters you want.

Get Power Adapter in Bulk Step-by-step


We Respond to Your Inquiry for Power Adapters Within 12 Hours

Generally speaking, time is an invaluable resource for your business and thus fast service delivery for power adapters is important and necessary to get a good result. Consequently, our short response times aim to provide easy access to our services of Power Adapters to meet your needs.

We Provide Customer-Based Solution of Power Adapters

Our aim is to offer a customized solution to meet all your requirements for Power Adapters. We are determined to bring your vision to life because customer satisfaction for Power Adapters is extremely important to us.

We Achieve the Goal of Efficient Power Adapter Manufacturing

The Sunshine factories in China and outside China--Vietnam are fitted with the machinery of highly Validated and Recognized test equipment brands in our laboratories and production workshop, to ensure that we efficiently manufacture high-quality, fast, compact and compatible Power Adapters. It also enables us to produce in bulk within short turnaround times and prove competitive prices for Power Adapters.

We Offer Custom Power Adapter Labeling and Packaging

If you come to us with Power Adapter packaging needs, we will do our best to make them come true. We have available designs for Power Adapters that you can choose from or we could explore customization for custom Power Adapters that you want.

Power Adapters FAQ

  • What types of wall-mounted power supplies are available?

    Wall mount power supplies can be either AC or DC. They come in a range of configurations, depending on the scenario that they’re designed for.
    Regulated – Regulated wall mount power supplies feature voltage regulators that ensure the output voltage remains consistent, never deviating from the rated value of the power supply.
    Unregulated – Unregulated wall mount power supplies differ in that their output voltage will decrease as the output current increases and vice versa. This means that the power supply must be matched as closely as possible to the voltage and current requirements of the device in question.
    Linear – Linear wall mount power supplies convert high-voltage AC into low voltage, which is then converted into DC voltage. Whilst these tend to have low efficiency, they are also more reliable and faster than switching mode power supplies.
    Switching mode power supplies – Wall mount switching mode power supplies convert the input signal into DC before stepping down or up the voltage to the required level. These power supplies have high efficiency and are less bulky than their linear counterparts.
  • What are the primary components of a wall mount power supply?

    Depending on its configuration, a wall-mount power supply will typically consist of a transformer, a rectifier, smoothing, a regulator, and a load. The input transformer steps down the AC power, and a rectifier circuit converts the AC components present into DC components. The signal is then smoothed out by a filtering circuit. A regulator controls the voltage to the desired level, before leading to the load which uses the pure DC output from the regulated output.
  • Where are wall mount power supplies used?

    Wall mount power supplies are used in a wide range of industries and applications. They can be designed for use with a full range of input voltages and can output to a similarly wide range of wattages. Linear wall mount power supplies are typically used in audio frequency applications due to their immunity to RFI. Meanwhile, wall mount switch mode power supplies are used in phone chargers and DC motors.
  • How do you choose a wall mount power supply?

    In order to choose the right wall mount power supply for your requirements, you need to first find out where your device needs AC or DC. You’ll usually find the power requirement on the device itself, look for the voltage requirements so that you can ensure you are providing the correct amount of power. Too much or too little power may lead to your device being damaged.
  • Do all desktop computers use the same power cord?

    Basically, if it's just a cable (no power adapter) and it physically fits your computer, it'll be just fine. Desktop computers (and many monitors) all use the same connector (IEC). Of course, different plugs are used in different countries, but electrically they are all the same.
  • Can I use any power adapter for PC?

    It's tempting to buy just any power supply to run your PC, but that's not a wise choice. A power supply that doesn't provide reliable or clean power can cause any number of problems, including instability that can be hard to pin down.
  • What is AC adapter for desktop?

    AC adapter, also called a power adapter or laptop charger, is used to provide sufficient power to operate the laptop for extended periods and to recharge the laptop battery.
  • Are desktop power supplies interchangeable?

    Yes, they are likely interchangeable even though voltage is not the same. This is because the voltage difference is within specs, and I am GUESSING you could go even higher or lower in voltage.

  • How do I know if my power adapter is compatible?

    The right AC adapter for your device is one with matching electrical ratings. The device's input voltage and current must match the adapter's output voltage and current. Check the device's product label or user manual to see its rated voltage and current.

  • What happens if you use the wrong power adapter?

    Using the wrong power adapter can lead to various issues such as voltage and current mismatches, overheating, and potential short circuits. This can result in damage to the device, the adapter, or even pose safety hazards like fires. It's crucial to use the correct adapter specified by the device manufacturer to ensure safe and proper operation.

  • What causes a power adapter to fail?

    Power adapters can fail due to overloading, voltage spikes, physical damage, poor quality components, heat buildup, manufacturing defects, and age/wear. To extend their lifespan, use them within specified limits, protect them from damage, and opt for quality products from reputable manufacturers.
  • Can you repair power adapter?

    Power adapters can cost hundreds of dollars to replace, but they can often be repaired for free if you already have the necessary materials. The same thing can happen to the plug on any kind of power adapter, but it happens most frequently with notebook computer power supplies, especially ones with coaxial cords.

  • When should I replace my desktop power supply?

    Replace your desktop power supply if it shows signs of failure like frequent crashes or overheating, when upgrading components, with age, for unreliable performance, if it's making unusual noises, or if there's physical damage. Regular maintenance helps catch issues early.
  • How do I test my desktop power supply?

    To test your desktop power supply, you can use a power supply tester, a multimeter, or perform a paperclip test. These methods help determine if the power supply is functioning correctly.
  • What is a usb c power adapter?

    A USB-C power adapter is a type of power adapter that utilizes the USB Type-C connector to provide power to various devices. It delivers power to devices such as smartphones, tablets, laptops, and other electronics that support USB-C charging. These adapters typically offer faster charging speeds and higher power output compared to older USB-A adapters. They are versatile and widely used due to the USB-C connector's reversible design and ability to carry both power and data signals.
  • What is a USB-C power adaptor used for?

    A USB-C power adapter is used to provide power to various devices, such as smartphones, tablets, laptops, and other electronics that support USB-C charging. It enables users to charge their devices quickly and efficiently by delivering power through the USB Type-C connector. Additionally, USB-C power adapters are versatile and can charge multiple types of devices, making them a popular choice for modern electronics.
  • How fast is 20w usb-c power adapter?

    A 20W USB-C power adapter delivers power at a rate of 20 watts. The charging speed provided by a 20W adapter can vary depending on the device being charged. Generally, it can charge smartphones and smaller devices relatively quickly, especially those that support fast charging protocols. However, for larger devices like tablets or laptops, the charging speed may be slower compared to higher-wattage adapters. 
  • Are all USB-C power adapters the same?

    No, not all USB-C power adapters are the same. While they all use the USB-C connector to deliver power, they can vary in terms of power output, charging speed, compatibility with different devices, and additional features like fast charging protocols. Some USB-C power adapters may support higher wattages for faster charging, while others may have specific compatibility with certain devices or charging standards. It's essential to choose a USB-C power adapter that meets the power requirements and charging specifications of your device to ensure optimal performance and compatibility.
  • Does USB Type C charge faster?

    USB Type-C itself doesn't inherently charge faster than other types of USB connectors like USB Type-A. However, USB-C enables faster charging when paired with power delivery (PD) technology and higher-wattage power adapters. USB-C with Power Delivery can support higher power levels, allowing for faster charging of compatible devices such as smartphones, tablets, and laptops. Additionally, USB-C's reversible design and versatility make it more convenient for users, but its charging speed ultimately depends on the power delivery capability of the charger and the device being charged.
  • What is the difference between 20W and 30W USB-C power adapter?

    The main difference between a 20W and a 30W USB-C power adapter is the amount of power they can deliver. A 20W adapter can provide up to 20 watts of power, while a 30W adapter can deliver up to 30 watts. This means that the 30W adapter has a higher power output capability, allowing it to charge devices at a faster rate compared to the 20W adapter. As a result, devices charged with a 30W adapter may recharge more quickly, especially if they support fast charging protocols and can handle higher power input.

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



Booth No. L24.26
 06-08 June.2024