Shu Guang
Shu Guang
High-Voltage & Current-Limiting Fuses for Industrial and Automotive Applications
Wenzhou Shuguang Fuse Co., Ltd. is strategically located in Yueqing, Zhejiang Province—widely recognized as the "Electrical Capital of China." We are a specialized power technology enterprise that seamlessly integrates R&D, advanced manufacturing, and global sales services.
Our journey began in 1992 as the "Yueqing Shuguang Fuse Factory." Over three decades, we have evolved from a local workshop into a leading global supplier, focusing on the high-stakes demands of modern electrical infrastructure and the burgeoning Electric Vehicle (EV) sector.
As a designated producer for the Ministry of Electric Power Industry, we take pride in our ability to deliver "Information Gain" through technical transparency and rigorous adherence to international safety standards.
Decoding the Supply Chain Superiority and R&D Innovation
Located in Yueqing, we leverage a hyper-local supply chain for raw materials like high-purity silver, specialized ceramics, and quartz sand. This integration reduces lead times by 40% compared to Western counterparts.
China's EV fuse manufacturing has achieved "economies of scale." We provide IATF 16949-grade quality at wholesale price points, enabling global OEMs to maintain competitive margins in the EV market.
With the shift from 400V to 800V EV architectures, our R&D teams can develop and test new high-voltage DC fuse prototypes within weeks, ensuring your projects stay ahead of the curve.
Our products are tested and validated by the world's most prestigious electrical laboratories.
We are designated by the Ministry of Electric Power Industry to produce high-voltage fuses, zinc oxide arresters, and insulators. Every product undergoes rigorous testing at:
Compliance Standards: Our technical performance meets or exceeds ANSI C37.42, DIN 43625, BS 2692, IEC 60282, IEC 60644, and VDE 0636. We operate under a robust ISO 9001:2000 Quality Management System.
From Urban Charging Hubs to Industrial Power Grids
Critical protection for Battery Management Systems (BMS), Traction Inverters, and On-Board Chargers (OBC) in passenger cars and electric buses.
Ensuring the safety of ultra-rapid charging infrastructure (Level 3) against short-circuit currents and surges during high-load periods.
Protecting BESS (Battery Energy Storage Systems) and solar inverters, facilitating the transition to green energy grids.
Medium and high voltage current-limiting fuses for transformer protection and power distribution in factories and smart cities.
In recent years, Wenzhou Shuguang has invested heavily in automated assembly lines and precision testing equipment. While vigorously developing new products, we have always attached importance to the process flow. High-quality raw materials, such as 95% alumina ceramic tubes and high-purity silver elements, are the foundation of our reliability.
"Shu Rong" brand products have enjoyed a high reputation among domestic and foreign users because we don't just sell components; we provide safety insurance for multimillion-dollar assets.
Connecting Power to the World
Our products are exported to various provincial power companies across China and established a complete sales network. Beyond our borders, we have built strong business ties in:
We sincerely welcome customers from home and abroad to discuss cooperation. Whether you are a global enterprise looking for high-volume procurement or a specialized engineering firm needing custom solutions, we have the capacity to deliver.
Addressing Common Inquiries from Global Procurement Officers
Professional Protection for Every Voltage Level
