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- 06Non-Standard vs Certified Power Adapters | Why Certification Matters
4th Floor, Building 2, QinHui Road, Guxing Community, Xixiang Street, Bao'an District, Shenzhen, China
Company Profile
HomeCompany Profile
Shenzhen Keyulong Technology Co., Ltd.
Mid-to-High End Power Adapter · Customized Solution Provider
Make Every Watt More Valuable
Keyulong Technology – Shenzhen Power Adapter Source Factory
Shenzhen Keyulong Technology Co., Ltd. (Keyulong Technology) is a power adapter manufacturer and charger customization manufacturer located in Gushu, Bao'an, Shenzhen, Guangdong, with an 8,000㎡ production workshop in Huizhou Boluo. The company focuses on mid-to-high end power adapters, standard chargers, GaN PD fast chargers, and customized power solutions, covering a power range of 5W-120W, offering various voltages including 5V, 9V, 12V, 15V, 18V, 19V, 21V, 24V, 29V, with an annual production capacity of 10 million units, serving more than 3,000 enterprise customers worldwide.
As a Shenzhen power adapter source factory, Keyulong Technology integrates R&D, production, sales and service. Core team members have over 18 years of experience in the power supply industry, and the company consistently invests 12% of annual revenue into R&D. Its core competitiveness lies in high reliability (MTBF ≥ 50,000 hours), full compliance (100+ certifications including CCC/CE/UL/FCC/PSE/KC/UKCA), and fast customization (15-20 days delivery), widely applied in security surveillance, industrial control, LED lighting, medical equipment, audio/video, consumer electronics and various other fields.
Production Overview
Huizhou Boluo 8,000㎡ production factory · automated production lines · equipped with over 150 advanced production and testing equipment · 150 employees · 8 full inspection processes · finished product pass rate 99.95%
Contact Us
Key Account Hotline:
13590301618 (WeChat same number)
Sales Inquiry:
18129821159
Official Website:
www.szkeyulong.com
Company Address:
4th Floor, Building 2, QinHui Road, Guxing Community, Xixiang Street, Bao'an District, Shenzhen, China
Core Product Matrix
OEM Bundled Chargers
5V1A / 5V2A (5W-10W)
Ripple ≤200mV · Standby ≤0.1W · MTBF ≥50,000h
CCC/CE/UL/FCC/UKCA certified
Large stock of China/US/EU/UK white and China/US black, MOQ 100 pcs for stock items
Phone Fast Chargers
18W QC3.0 / 20W-30W GaN
30% smaller size · Supports PD3.0/PPS/QC4+
Single USB-C or USB-C+USB-A optional
Large stock of China white, MOQ 100 pcs for stock items
Custom Power Adapters
5W-120W · 5V-30V customizable
5W-65W wall-mount power supply / 24W-120W desktop power supply · 8 full inspections · Failure rate <0.05%
Full certifications, suitable for medical/industrial/security/drone etc.
Stock Power Adapters
12V1A / 12V2A / 12V3A
Large stock of China/US black, small stock of EU black
MOQ 150 pcs
Uniform specifications: cable length 1.5m · DC plug 5.5×2.1×10mm tuning fork straight type
International Certifications · Global Access
100+ International & Domestic Certifications | Covering 30+ Countries Market Access
✅ More product certifications and energy efficiency certifications · Contact us for a detailed certificate list
Why Choose Keyulong?
Technological Innovation
Standby power ≤0.1W
MTBF ≥50,000 hours
Reliable Quality
Pass rate 99.95%
Flame retardant V0 · 8 full inspections
Full Certifications
100+ international certs
Export to global markets without barriers
Fast Customization
Stock items ship within 24h
Regular samples shipped within 24 working hours
15-20 days delivery for custom orders
Service Guarantee
2h pre/post-sales response
2-year warranty
Source Factory
Own 8,000㎡ factory
No middlemen markup
Typical Applications
Looking Forward to Long-Term Strategic Cooperation
From selection to mass production · Full life-cycle technical support
Visit Official Website Key Account Hotline: 13590301618