Founded in December 2002, Jiangxi QOCI Electric Co. Ltd has established itself as a premier global leader in the power equipment industry. With a registered capital of 508 million Yuan and an expansive manufacturing base of 70,000 m² in Luxi County, Jiangxi—the "Ceramic & Insulator Capital of China"—we provide advanced electrical solutions for the world's most demanding power grids.
Our specialization in the Glass Isolator U300B and high-strength toughened glass series represents the pinnacle of dielectric engineering. These insulators are designed to withstand extreme mechanical loads and environmental stressors, ensuring the stability of AC and DC transmission lines up to 1000kV.
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The U300B model is engineered for heavy-duty applications, boasting a specified mechanical failing load (SML) of 300kN. This makes it ideal for long-span crossings over rivers and mountainous terrain where tension stability is paramount.
Utilizing high-precision thermal toughening, our glass discs develop a compressive stress layer that inhibits crack propagation. Even in the rare event of glass breakage, the remaining "stub" maintains mechanical integrity, preventing line drops.
With high purity raw materials, the glass shell offers superior dielectric strength compared to porcelain. It remains inert to UV radiation and chemical aging, providing a service life exceeding 40 years in high-voltage environments.
China's insulator industry has matured into a global powerhouse. As a leading manufacturer, we leverage local mineral wealth and a concentrated supply chain to offer Information Gain to our clients: we don't just supply parts; we supply grid reliability. Our "Total Oxygen Kiln" technology reduces bubbles and impurities in the glass, resulting in a self-shattering rate significantly lower than the IEC 60305 standard requirements.
The shift towards Ultra-High Voltage Direct Current (UHVDC) transmission requires insulators with superior RTV coating compatibility and ion migration resistance. U300B is the cornerstone of these mega-projects.
Integration of IoT sensors on insulator strings for real-time leakage current monitoring is the next frontier. Our factory is actively researching "Smart Glass" interfaces.
Glass is 100% recyclable. Unlike composite insulators that face disposal challenges, our glass insulators support the circular economy of the energy sector.
From the salt-mists of coastal regions to the sandstorms of desert environments, our Anti-Pollution and Open Profile insulators are designed for self-cleaning. The deep under-ribs maximize creepage distance, preventing flashovers in heavy pollution zones.
Solar and wind farms in remote areas require massive infrastructure to transport power to urban centers. High-strength U300B strings facilitate these long-distance HVDC links with minimal maintenance.
As cities expand, existing corridors must carry more power. Replacing older units with U300B high-capacity insulators allows for line uprating without the need for massive new towers, saving billions in civil works.
In areas with chemical emissions or heavy industrial dust, our RTV Silicone Coated glass insulators provide a hydrophobic surface that eliminates the need for regular manual cleaning, reducing operational costs.
Precise molding ensures uniform thickness and structural balance of the glass shell.
Environmentally friendly melting process that yields high-purity glass for better insulation.
Every batch undergoes rigorous electrical puncture and mechanical load testing before shipment.
Serving EPC contractors, National Power Grids, and Industrial Wholesalers worldwide. We provide comprehensive documentation for tender compliance.
Located near major shipping ports, ensuring fast delivery for international infrastructure projects.
Technical parameters can be adjusted to meet specific national standards (ANSI, AS, CSA, BS).
Direct factory pricing combined with massive production scale reduces total project procurement costs by 15-25%.
The U300B offers a high mechanical failing load (300kN), making it suitable for EHV and UHV transmission lines. Its toughened glass composition provides high thermal stability, resistance to aging, and a "self-cleaning" profile that performs exceptionally well in polluted environments.
We adhere to ISO 9001 standards and conduct 100% routine tests including thermal shock, mechanical load, and steep-front impulse voltage tests. Our 26+ patents reflect our ongoing innovation in material science and manufacturing precision.
Yes, we offer Room Temperature Vulcanization (RTV) silicone-coated glass insulators. This hybrid solution combines the mechanical reliability of glass with the superior hydrophobicity of silicone, ideal for coastal or highly industrial areas.
With an annual output of 39,000 tons and a state-of-the-art facility, we have the capacity to handle large-scale international tenders. We are currently a key supplier for several world-class power grid constructions.
Our toughened glass insulators are designed for a service life of over 40 years. Unlike composite insulators, glass does not degrade under UV exposure and maintains its mechanical strength throughout its lifecycle.
