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8618758345317

E-mail

charlieyu@keyongrelay.com

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What We Do
Full Range Relay Products & Solutions

As an experienced China relay manufacturer, KEYONG provides a comprehensive portfolio of electromagnetic relay products and accessories:

■ Automotive Relays
■ New Energy (High-Current) Relays
■ Power Relays
■ Signal Relays
■ Car Flasher Relays
■ Intermittent Wiper Relays
■ Relay Wiring Harness & Sockets

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Our products are widely used in:

● Automotive Electronics
● Renewable Energy Charging & Storage Systems
● Security & Surveillance Systems
● Household Appliances
● Communication Equipment
● Industrial Automation & Smart Technology

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We act not only as a supplier, but also as a reliable relay solution partner, supporting OEM and customized projects.
Our Advantages
Why KEYONG Stands Out as a Trusted Relay Factory in China

Strong Manufacturing Capability

12,000㎡ modern factory
Fully automated production and testing lines
Annual output exceeding 80 million relays

Strict Quality Control (ISO System)

Certified under ISO 9001:2015
Certified by UL, TUV, CQC, CE, RoHS
Full-process quality inspection from raw materials to finished products

Advanced Equipment & Technology

Automated assembly and testing systems
Industrial vision inspection
Precision winding, soldering, and parameter adjustment machines

Independent R&D & Innovation

Continuous product development
Utility model patents
Customized relay design and engineering support

Global Market Experience

Exported to North America, Europe, Middle East, Southeast Asia
Stable cooperation with international OEM customers
Annual export volume exceeding 24 million units

.about

About Us

NINGBO KEYONG JINGSHENG ELECTRICAL APPLIANCE CO., LTD.
Ningbo Keyong Jingsheng Electrical Appliance Co., Ltd. was established in 2012. We are located in Ningbo, Zhejiang, a port city in eastern China. Our factory spans an area of 12000 square meters and is equipped with multiple standardized and automated production lines. We have grown into a large-scale manufacturing company that can produce relays of over 80 million pieces annually. We have become a reputable supplier for many domestic and international clients in sectors such as automotive electronics, Renewable Energy Charging and Storage, Security&Surveillance system, household appliances, communication equipment, and automation control systems.

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Featured Products

KEYONG is a professional relay manufacturer and factory in China, offering automotive relays, power relays, signal relays, and new energy high-current relays designed for reliable industrial and automotive applications.
Standard ISO Terminal High Current Automotive Relay

Standard ISO Terminal High Current Automotive Relay

Model:KLDH(V7)
100A Automotive High Current Relay

100A Automotive High Current Relay

Model:KLDH(V7)
General Purpose Automotive Power Relay

General Purpose Automotive Power Relay

High Current Automotive PCB Relay

High Current Automotive PCB Relay

Miniature Automotive PCB Relay

Miniature Automotive PCB Relay

Send Inquiry

Looking for a Reliable Relay Manufacturer in China?
Partner with KEYONG, your trusted relay supplier and factory, to get high-quality products, competitive pricing, and professional service.
Contact us today for samples, technical support, or a customized quotation.

New Products

50A Miniature High Power Relay

50A Miniature High Power Relay

Model:KQT(T90)
25A Miniature General Purpose Power Relay

25A Miniature General Purpose Power Relay

Model:KQI102(102F)
Miniature Power PCB Relay For Switching 20A

Miniature Power PCB Relay For Switching 20A

Model:KQI101(14FHA)
Shrouded Type Automotive Relay

Shrouded Type Automotive Relay

Miniature Automotive Heavy Power Relay

Miniature Automotive Heavy Power Relay

News

Stay updated with KEYONG, a trusted relay supplier in China, sharing the latest innovations, certifications, and manufacturing upgrades in electromagnetic relay technology.
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NINGBO KEYONG JINGSHENG ELECTRICAL APPLIANCE CO., LTD. Showcases Innovative Relays at Electronic Asia 2025

NINGBO KEYONG JINGSHENG ELECTRICAL APPLIANCE CO., LTD. Showcases Innovative Relays at Electronic Asia 2025

Electronic Asia 2025, held in Hong Kong, is one of Asia’s premier exhibitions for electronic components, industrial automation, and automotive electronics.

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10
04
NINGBO KEYONG JINGSHENG ELECTRICAL APPLIANCE CO.,LTD. Showcases Automotive Relays at Automechanika Frankfurt 2025

NINGBO KEYONG JINGSHENG ELECTRICAL APPLIANCE CO.,LTD. Showcases Automotive Relays at Automechanika Frankfurt 2025

Automechanika Frankfurt 2025, one of the world’s most influential trade fairs for the automotive aftermarket and industrial electronics, has once again attracted global manufacturers, suppliers, and professional buyers.

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