Custom Power Adapter Manufacturer in China & Vietnam

Last updated: June 8, 2026

Sunshine Electronics is a professional power adapter manufacturer in China — an AC DC power adapter manufacturer with a second plant in Vietnam — backed by 22+ years of experience and 800+ workers across dual factories in China and Vietnam. The global power adapter market exceeds $28 billion annually, and Sunshine produces the full spectrum — from compact 5W wall-mount units to 85W desktop power supplies — serving OEM brands, electronics distributors, and industrial equipment manufacturers worldwide. Every unit carries UL 62368-1, FCC Part 15, CE, RoHS, and REACH certifications, manufactured with our China+1 sourcing strategy for tariff optimization through our Vietnam facility.

Sunshine Power Adapter OEM: Quick Facts for B2B Buyers

Quick answer: Sunshine Electronics is a power adapter manufacturer in China producing AC-DC and DC power adapters across two owned plants — Changzhou, China (est. 2003, 25,000 sqm) and Vinh Phuc, Vietnam (est. 2018, 12,000 sqm) — with combined PSU + AC capacity above 20M units/year. Adapters ship certified to TL 9000, ISO 9001, ISO 14001, and ISO 27001, with cULus, CE, FCC, and RoHS product marks. We quote FOB Shanghai or Hai Phong; MOQ and lead times vary by wattage, certification, and packaging. Custom branding and private-label packaging available.

Your Trusted AC-DC and DC Power Adapter Manufacturer in China

Sunshine offers factory-direct wholesale pricing on all AC/DC power adapter models. MOQ starts at 1,000 units for stock configurations and 3,000 units for custom specifications. Volume pricing tiers are available for orders exceeding 10,000, 50,000, and 100,000 units. Our dual-factory capacity in China and Vietnam supports annual production volumes exceeding 20 million power adapter units, with China+1 sourcing providing tariff optimization for North American buyers. Lead time is 25–35 days from order confirmation, with expedited 15-day options for urgent production runs. Contact our sales team at /contact/ for volume pricing.

Available Power Adapter OEM Configurations

Max output (W)	Form factor	Certifications	Vietnam capacity	Typical MOQ / lead time
12W	Wall-mount	cULus / CE / FCC / RoHS	Yes	From 1,000 units / 25–35 days
20W	Wall-mount	cULus / CE / FCC / RoHS	Yes	From 1,000 units / 25–35 days
27W	Wall-mount	cULus / CE / FCC / RoHS	Yes	From 1,000 units / 25–35 days
36W	Wall / desktop	cULus / CE / FCC / RoHS	Yes	From 1,000 units / 25–35 days
45W	Wall / desktop	cULus / CE / FCC / RoHS	Yes	From 1,000 units / 25–35 days
55W	Desktop	cULus / CE / FCC / RoHS	Yes	From 1,000 units / 25–35 days
65W	Desktop	cULus / CE / FCC / RoHS	Yes	From 1,000 units / 25–35 days
108W	Desktop	cULus / CE / FCC / RoHS	Yes	From 1,000 units / 25–35 days
145W	Desktop / DIN-rail	cULus / CE / FCC / RoHS	Yes	From 1,000 units / 25–35 days

All configurations are buildable at either the China or Vietnam plant on shared tooling and certifications. MOQ and lead times vary by wattage, certification scope, connector, and packaging — request a quote for your exact spec.

Sourcing flexibility: Need a tariff hedge on your adapter program? Compare your China-vs-Vietnam landed cost → Every wattage above is buildable at our China or Vietnam plant on shared certifications — see how the China + Vietnam dual-factory model works →

Sunshine Power Adapter Series

Desktop Power Adapter

Sunshine manufactures desktop (brick) power adapters from 5W to 85W with detachable IEC AC cords. Our desktop lineup covers 5V–48V output for CCTV, industrial controllers, LED drivers, medical devices, and PoE injectors. Every unit includes full protection circuitry and UL 62368-1 certification.

Wall Mount Power Adapter

Compact wall-plug power adapters from 5V to 48V that plug directly into wall outlets. Available with fixed US/EU plugs or interchangeable US/EU/UK/AU snap-on plug heads. Ideal for routers, set-top boxes, IoT hubs, smart home devices, and consumer electronics requiring always-on DC power.

USB-C Power Adapter

Fixed-voltage power adapters with USB Type-C output connector for single-board computers (Raspberry Pi), IoT gateways, smart displays, and connected home devices. Available in 12W and 15W (5V/3A) configurations with optional common-mode noise filtering for EMI-sensitive applications.

Customize Your Power Adapter for Your Brand

Sunshine Electronics manufactures AC/DC power adapters in three form factors — desktop brick, wall mount, and USB-C — covering output voltages from 3V to 48V and power ratings from 5W to 85W. With specialized models including PoE injectors for IP surveillance, RF filtered adapters for TV antenna systems, and interchangeable-plug adapters for global distribution, our catalog addresses every B2B power adapter requirement. Explore our series below.

PoE Injector

Power over Ethernet injector adapters that convert AC wall power to 56VDC and inject it into Ethernet cables via RJ-45. Powers IP cameras, WiFi access points, and VoIP phones over existing network cabling without requiring a PoE-capable switch.

RF Filtered Adapter

Specialized DC power adapters with integrated RF filtering and F-connector output for TV antennas, signal amplifiers, and CATV distribution equipment. The RF filter stage attenuates conducted noise by >30dB at frequencies above 150kHz, keeping the DC output clean for signal-sensitive applications.

Interchangeable Plug

Power adapters with snap-on interchangeable plug heads covering US, EU, UK, and AU markets from a single adapter SKU. The spring-loaded plug retention mechanism is tested to 5,000+ snap cycles. Eliminates the need to stock 4 regional adapter variants — one SKU serves every market.

Strict Quality Control for Every Power Adapter

Every Sunshine power adapter undergoes a 6-stage quality control process: incoming material inspection (IQC), in-process inspection (IPQC), automated electrical testing (100% hi-pot, output voltage/current verification), burn-in testing (4-hour full-load aging), final quality audit (FQA with AQL 0.65), and outgoing quality control (OQC). Our facilities hold ISO 9001:2015 quality management, ISO 14001:2015 environmental management, and ISO 27001 information security certifications. All power adapters are tested to UL 62368-1 safety standards. Defect rates across our power adapter production lines average below 0.15% — verified by third-party audit data available on request.

What Sunshine Can Do for You

Sunshine is a trusted power adapter manufacturer with over 22 years of experience delivering high-quality AC power adapter, DC, and USB Type-C power adapter models for industrial, commercial, and consumer electronics applications. As a full-line AC power adapter manufacturer and custom power-supply partner, we build custom-voltage units tailored to OEM brands, electronics distributors, and equipment manufacturers across North America, Europe, and Asia-Pacific. Our engineering team provides end-to-end support from voltage specification through safety certification.

Power Adapter Advantages

Production Capacity

We utilize fully automated machines to ensure high production efficiency.

Research and Development Team

Our dedicated R&D team, consisting of 12 engineers, provides robust support for our customers.

Quality Control

We implement a three-step quality control process: Incoming Quality Control (IQC), In-Process Quality Control (IPQC), and Outgoing Quality Control (OQC).

Recyclable

Our materials are environmentally friendly and biodegradable, promoting sustainability.

OEM & ODM

We support all forms of OEM and ODM customization requirements to meet your specific needs.

Global Support

Our team is available 7 days a week for 12 hours a day to assist with all your after-sales inquiries.

Power Adapter Applications

Featured Power Adapters

Customize Quality Power Adapters on Budget

Customize your power adapters to match your brand identity and technical requirements. Choose from desktop, wall mount, or USB-C form factors, specify your exact output voltage and current, select regional plug types, and apply your logo and brand colors. Our OEM/ODM program supports orders from MOQ 1,000 units with full private-label capability.

Wholesale Power Adapters — Factory Direct Pricing

High-Quality and Safe Power Adapters

We prioritize rigorous quality checks and manufacturing standards to ensure that our power adapters meet the highest criteria. At Sunshine Electronics, our power adapters are designed to prevent overheating, producing minimal heat during use. You can trust that all our wall power adapters are 100% safe, reliable, and of superior quality to help enhance your business

Strong Supply Capacity

We guarantee fast manufacturing to keep your production and distribution schedules on track. With our self-owned factories in China and Vietnam, equipped with top-tier testing equipment, we efficiently produce high-quality laptop power adapters and can fulfill large orders with quick turnaround times for phone power adapters.

Customized Orders Welcome

Our team of engineers specializes in creating custom designs tailored to your specifications. We strive to bring your vision to life with personalized wall power adapters, as customer satisfaction for desktop power adapters is our top priority.

Competitive Pricing

With over 22 years of manufacturing experience, our advanced production technology ensures efficiency rates above 92% on production lines. Annual capacity exceeds 20 million units across our Changzhou, China (est. 2001, 600+ workers) and Vinh Phuc, Vietnam (est. 2018, 1,000+ workers) facilities.

Free Charger Sample

Sunshine provides complimentary power adapter samples for OEM qualification testing, ensuring our adapters meet your custom design requirements before committing to production. Samples ship within 5–7 working days with full test reports and certification documentation included. Request a sample →

Worry-Free Pre and After-Sales Services

We understand that time is vital for your business. Standard lead time is 25–35 days from order confirmation, with expedited 15-day options available. Our dual-factory capacity across China and Vietnam means we can handle surge orders and split production across facilities for supply chain resilience. FCC Part 15 and UL certification documentation ships with every order.

Why Choose Sunshine

Why You Can Trust Sunshine As Your Power Adapter Supplier

How to Order Custom Power Adapters

MOQ for customization starts at 1,000 units for stock voltage/plug configurations and 3,000 units for custom voltage, connector, branding, or packaging. Our dual-factory production in China and Vietnam ensures consistent quality and competitive pricing across all order sizes, with China+1 sourcing available for tariff optimization on US-bound shipments.

Customer Reviews

Rated 5 out of 5

I was pleasantly surprised by Sunshine’s service. When discussing products, they were able to provide advice on the market quotations and forecast for the future, which kept me informed and able to make a quick judgment on the products.

Karen

Rated 5 out of 5

During our cooperation with Sunshine, we worked together on power adapters and cables. We are very relieved by Sunshine’s delivery service and quality control, we have had very few quality complaints over the past 10 years.

Charlies

Power Adapters Manufacturer FAQs

What types of power adapters does Sunshine manufacture?

We manufacture desktop (brick) power adapters from 5W to 85W with IEC AC inlet, wall mount power adapters from 5W to 55W with direct wall-plug form factor, and USB-C power adapters with fixed-voltage Type-C output. Specialized models include PoE injectors (56V/30W), RF filtered adapters for TV antennas, and interchangeable-plug adapters for US/EU/UK/AU global distribution.

What output voltage and power range can you produce?

Output voltage range: 3V to 48V. Power range: 5W to 85W. Current range: 0.5A to 6.2A. Custom voltage and current specifications are configured to match your device’s exact requirements at MOQ 3,000. Common configurations include 5V, 9V, 12V, 15V, 19V, 24V, 30V, and 48V.

What certifications do your power adapters carry?

All power adapters carry UL 62368-1 (US/Canada), FCC Part 15 Class B (EMC), CE (EU LVD + EMC), RoHS, and REACH. DoE Level VI energy efficiency certification available as option. Each regional plug variant carries its own safety mark. Complete compliance documentation provided for OEM importers.

Can you customize the power adapter to our specifications?

Yes — full OEM/ODM customization including output voltage/current, DC connector type (barrel jacks, USB-C, F-connector, RJ-45, custom pins), housing color (Pantone/RAL), logo application (pad print or laser engraving), DC cable length, regional plug selection, and private-label retail packaging. Custom samples ship in 5–7 working days.

What is the warranty for your power adapters?

Standard warranty is 2 years from date of shipment, extendable to 3 years for OEM contracts. Warranty covers manufacturing defects in materials and workmanship under normal operating conditions within rated specifications.

What is the minimum order quantity (MOQ)?

MOQ is 1,000 units for stock configurations (standard voltage, US plug) and 3,000 units for custom specifications (custom voltage, connector, branding, EU/UK/AU plug). Volume pricing tiers available for 10K, 50K, and 100K+ units.

Do you have factories in both China and Vietnam?

Yes — we operate dual factories: Changzhou, China (established 2001, 600+ workers) and Vinh Phuc, Vietnam (established 2018, 1,000+ workers). The Vietnam facility provides a China+1 sourcing option for buyers seeking tariff optimization on US-bound shipments and supply chain diversification. Both facilities maintain identical quality processes, certifications, and production capabilities.

How long is the lead time?

Standard lead time is 25–35 days from order confirmation. Expedited 15-day options available for urgent production runs. Engineering samples ship in 5–7 days for qualification testing. Mixed orders (multiple voltages or plug regions on one PO) ship on the same timeline.

What types of power adapters does Sunshine manufacture?

We manufacture desktop (brick) power adapters from 5W to 85W with IEC AC inlet, wall mount power adapters from 5W to 55W with direct wall-plug form factor, and USB-C power adapters with fixed-voltage Type-C output. Specialized models include PoE injectors (56V/30W), RF filtered adapters for TV antennas, and interchangeable-plug adapters for US/EU/UK/AU global distribution.

What output voltage and power range can you produce?

Output voltage range: 3V to 48V. Power range: 5W to 85W. Current range: 0.5A to 6.2A. Custom voltage and current specifications are configured to match your device’s exact requirements at MOQ 3,000. Common configurations include 5V, 9V, 12V, 15V, 19V, 24V, 30V, and 48V.

What certifications do your power adapters carry?

All power adapters carry UL 62368-1 (US/Canada), FCC Part 15 Class B (EMC), CE (EU LVD + EMC), RoHS, and REACH. DoE Level VI energy efficiency certification available as option. Each regional plug variant carries its own safety mark. Complete compliance documentation provided for OEM importers.

Can you customize the power adapter to our specifications?

Yes — full OEM/ODM customization including output voltage/current, DC connector type (barrel jacks, USB-C, F-connector, RJ-45, custom pins), housing color (Pantone/RAL), logo application (pad print or laser engraving), DC cable length, regional plug selection, and private-label retail packaging. Custom samples ship in 5–7 working days.

What is the warranty for your power adapters?

Standard warranty is 2 years from date of shipment, extendable to 3 years for OEM contracts. Warranty covers manufacturing defects in materials and workmanship under normal operating conditions within rated specifications.

What is the minimum order quantity (MOQ)?

MOQ is 1,000 units for stock configurations (standard voltage, US plug) and 3,000 units for custom specifications (custom voltage, connector, branding, EU/UK/AU plug). Volume pricing tiers available for 10K, 50K, and 100K+ units.

Do you have factories in both China and Vietnam?

Yes — we operate dual factories: Changzhou, China (established 2001, 600+ workers) and Vinh Phuc, Vietnam (established 2018, 1,000+ workers). The Vietnam facility provides a China+1 sourcing option for buyers seeking tariff optimization on US-bound shipments and supply chain diversification. Both facilities maintain identical quality processes, certifications, and production capabilities.

How long is the lead time?

Standard lead time is 25–35 days from order confirmation. Expedited 15-day options available for urgent production runs. Engineering samples ship in 5–7 days for qualification testing. Mixed orders (multiple voltages or plug regions on one PO) ship on the same timeline.