AC and DC Surge Protection Device Manufacturer Since 2009
- Fully certified for sale worldwide
- Specialized test machines
- Over 16 years of international trade experience
- Factory Inspection Support
- Raw material testing reports available upon request
Quality Control
Surge Protection Device Testing Before Shipment
Every batch undergoes thorough testing before shipment.
We back our products with a two-year warranty, offering free replacement for any defective units.
Every SPD is tested using automated equipment to validate the varistor (MOV) and gas discharge tube (GDT).
We check clamping voltage, leakage current, and response time to ensure these critical protective components meet exact specifications before shipment.
We perform certified high-current testing that simulates real-world surge conditions.
Our lab verifies SPD performance under extreme transients — 160 kA (8/20 µs waveform) for commercial-grade protection and 50 kA (10/350 µs waveform) for critical infrastructure.
Proactive safety testing: We expose varistors to sustained overvoltage conditions to monitor their thermal behavior.
This critical assessment ensures fail-safe operation and eliminates overheating risks in any operating environment.
Comprehensive waveform testing that replicates real-world conditions.
Our combination wave generator delivers a simultaneous 1.2/50 µs voltage surge and 8/20 µs current surge to verify SPD response accuracy under complex transient events.
LEEYEE SPD CERTIFICATION
We make all our products to IEC (International Electrotechnical Commission) standards.
They are certified by CQC, TUV, CB, CE, and RoHS, meeting all requirements to be sold across the European Union.
OUR EXHIBITION
Professional SPD Manufacturer & Supplier from China
Enterprise Member Unit of the Lightning Committee of the Chinese Meteorological Society
Vice President Unit of Yueqing Lightning Protection Electrical Industry Association
Vice President Unit of Yueqing Intelligent Manufacturing Industry Federation
OEM/ODM SUPPORT
Contact us for parameter, color, appearance, logo, and packaging design!
Why choose LEEYEE
SPD-Focused Manufacturing Since 2009
LEEYEE has supplied surge protective devices and low-voltage protection products since 2009, supporting AC distribution, DC power, solar PV, telecom, industrial, and OEM applications.
AC, DC, and Solar PV SPD Product Coverage
We provide AC SPD, DC SPD, PV surge protective devices, and signal surge protection options for different system voltages, installation positions, and protection levels.
IEC-Based Selection and Testing Support
Our SPD selection and production process focuses on key electrical parameters such as Uc, In, Imax, Iimp, Up, pole configuration, and application environment.
Stable Factory Production and Batch Supply
With an 8,000㎡ production facility, LEEYEE supports stable batch production, OEM orders, wholesale supply, and export projects requiring consistent product quality and delivery control.
OEM / ODM and Private Label Support
We support OEM / ODM customization, including product labeling, packaging, model selection, documentation, and project-based supply for distributors, cabinet builders, and electrical brands.
Testing, Inspection, and Export Support
LEEYEE supports product testing, quality inspection, factory verification, inspection videos, third-party inspection arrangements, and export documentation to help buyers reduce sourcing risk.