Professional Relay Solution Provider
Ningbo Keyong Jingsheng Electrical Appliance Co., Ltd – A trusted manufacturer of high-performance relays since 2012.
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Ningbo Keyong Jingsheng Electrical Appliance Co., Ltd – A trusted manufacturer of high-performance relays since 2012.
Ningbo Keyong Jingsheng Electrical Appliance Co., Ltd. was established in 2012. Located in Ningbo, Zhejiang — a major port city in eastern China — we have grown into a large-scale relay manufacturing enterprise with over 8,000 square meters of production space and an annual output capacity exceeding 80 million units.
Established as a professional relay manufacturer with a vision for innovation and quality.
Modern facility equipped with automated production lines and advanced testing equipment.
Over 80 million relays produced annually, serving global clients in automotive, industrial, and consumer sectors.
We are committed to exceeding customer expectations through continuous improvement and reliable product performance.
Keyong offers a comprehensive range of high-reliability relays designed for diverse industrial, automotive, and consumer applications.
High-sensitivity signal relays ideal for low-power switching in communication systems, control circuits, and automation.
Robust power relays designed for high-current switching in industrial and power supply applications.
High-voltage DC relays for solar inverters, energy storage systems, and EV charging stations.
Reliable relays engineered for automotive electrical systems including lighting, ignition, and ECU control.
Compact design for space-constrained PCB applications in consumer electronics and smart devices.
Designed for RF and high-frequency signal switching in telecom and test equipment.
Bi-stable relays that maintain state without continuous power, ideal for energy-saving applications.
Contactless switching with no moving parts, offering silent operation and long life.
Keyong relays are trusted across industries for their reliability, durability, and precision performance.
Our power and signal relays are widely used in PLCs, motor controls, and factory automation systems for stable and safe operation.
High-reliability signal relays ensure uninterrupted performance in surveillance cameras, access control, and alarm systems.
From washing machines to air conditioners, our relays provide safe and efficient switching in consumer electronics.
High-voltage DC and AC relays for UPS, solar inverters, battery management, and grid infrastructure.
Automotive-grade relays for lighting, engine control, HVAC, and electric vehicle power systems.
Signal and RF relays used in routers, base stations, and telecom infrastructure for clean signal routing.
Keyong participated in the 2024 Electronica China exhibition, showcasing our latest innovations in automotive and new energy relays.
Learn how to diagnose common issues in signal relays, including coil failure, contact wear, and switching anomalies.
While relays are long-lasting, they can fail over time. We explain when and why replacement is necessary for optimal vehicle performance.
As sustainability grows in importance, Keyong is developing eco-friendly relay technologies for solar, wind, and EV applications.
Have questions about our relays or need a custom solution? Reach out to our team for expert support.
Address: 350 Renmin North Road, Hengxi Town, Yinzhou District, Ningbo City, Zhejiang Province
Email: charlieyu@keyongrelay.com
Phone: +86-574-87233304
For product inquiries, technical support, or partnership opportunities, please contact us directly.
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