Our Product Portfolio
Over the past four decades, Guanghui has developed a wide range of transformers in various types and specifications, including oil-immersed transformers, box-type transformers, and dry-type transformers.
A State Grid Qualified Supplier Since 1979
Located in Changzhou, China, Guanghui Transformer operates a modern manufacturing base spanning 120 acres. With over four decades of industry expertise, we are an AAA Credit Enterprise and a National High-Tech Enterprise, dedicated to delivering reliable, efficient, and safe power transformer solutions to customers worldwide.
Changzhou Guanghui Transformer Manufacturing Co., Ltd. was founded in 1979 and is located in Changzhou, a historic and culturally rich city in China with a well-developed industrial economy.
Pursuing high standards and advanced technology has always been the goal of Guanghui. The company employs more than 100 highly qualified professional and technical personnel and has introduced internationally advanced equipment, including fully automatic core production lines from Germany Georg, fully automatic coil casting equipment from Germany, and multiple BRJ-1400-2 foil winding machines from Xi’an Qiyuan.
German Manufacturing TechGeorg core cutting & Hübers vacuum casting.
Robust Tank DesignHigh-quality sealing & precision welding.
Global CustomizationCustom voltage (6-35kV) & frequency (50/60Hz).
Comprehensive Power Solutions for Key Industries
Delivering specialized transformers for Urban Grids, Renewables, Mining, and EV Infrastructure. Engineered for stability in any sector.
Driven By Innovation, We Build A Safer, More Efficient World.
Engineered for Reliability
Backed by advanced equipment, rigorous processes, and decades of expertise, Guanghui Transformer ensures superior quality and reliability at every stage of manufacturing—from core precision and vacuum casting to comprehensive testing.
Precision Core Technology
Georg step-lap lines ensure industry-leading efficiency, reduced core losses, and consistently low operating noise levels.
Advanced Vacuum Process
Vacuum casting & filling eliminates voids, ensuring superior insulation strength, long-term reliability, and stable performance.
Certified Quality Lab
100% IEC/ANSI compliance testing is performed before every shipment to ensure safety, reliability, and consistent product quality.
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Tell us your specs (Voltage, kVA, Application). Our engineers will design a solution compliant with international standards.
