Introduction of Rongchun
At the core of every transformer driving industrial advancement, within every critical nexus empowering energy transition and manufacturing revitalization, resides a silent yet vital force. Sourced from nature, refined through master craftsmanship, it safeguards the stability and efficiency of power operations -
This is Electrical Laminated Wood, and this is the dedication and mission of Rongchun Wood.
Rongchun Wood Industry (Gaotang) Co., Ltd., located in Gaotang County, Liaocheng City, Shandong Province, China, covers a production area of over 20,000 square meters. Since its establishment in 2014, we have focused on the R&D and manufacturing of Electrical Laminated Wood and Insulation Components for oil-immersed transformers, and have grown to become one of the key global suppliers of insulation materials.
Guided by the philosophy of “Quality as the Foundation, Talent as the Cornerstone”, we are committed to advancing productive capabilities in the transformer insulation industry.
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Exporting countries
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Factory areas
Electrical Laminated Wood is a high-performance insulation and support material widely used in oil-immersed transformers. It offers moderate density, excellent mechanical strength, good adaptability to vacuum drying, high compatibility with transformer oil, and superior machinability. With a dielectric constant similar to transformer oil and rational insulation coordination design, it ensures long-term stable operation in 105°C transformer oil.
We offer a full range of insulation solutions:
Value-Grade Electrical Laminated Wood: Suitable for transformers up to 35kV.
Standard-Grade Electrical Laminated Wood: Suitable for transformers up to 110kV.
Beech-Enhanced Electrical Laminated Wood: Designed for transformers ranging from 110kV to 220kV, and compatible with key components in 330kV–750kV transformers.
High-Density Electrical Laminated Wood: With a density above 1.2, suitable for high-speed rail traction transformers and other special transformers requiring high mechanical strength.
Intelligent CNC machining of our self-produced premium electrical laminated wood guarantees high precision and consistently reliable quality.
Rongchun Certification
News
Rongchun participated in the Berlin CWIEME 20252025-06-08Rongchun participated in the Berlin CWIEME 2025June 3-5th, 2025, Rongchun export team participated in the Berlin International Wire, Cable, Coil & Insulation Exhibition (CWIEME), the world's leading event for electromagnetic technology. Held with great fanfare at the Berlin International Exhibition Center, Rongchun leveraged its professional solutions to deeply integrate into the global transformer insulation materials industry ecosystem, demonstrating the innovative vitality of Made in China in the high-end insulation materials sector.Learn More
Electrical Laminated Wood2025-08-08Electrical Laminated WoodElectrical Laminated Wood is a high-performance insulation and support material widely used in oil-immersed transformers. It offers moderate density, excellent mechanical strength, good adaptability to vacuum drying, high compatibility with transformer oil, and superior machinability. With a dielectric constant similar to transformer oil and rational insulation coordination design, it ensures long-term stable operation in 105°C transformer oil.Learn More
Liaocheng Committee Secretary visited Rongchun2025-09-12Liaocheng Committee Secretary visited RongchunLiaocheng Committee Secretary led a research team to visit Rongchun Company for inspection and guidanceLearn More
Gaotang County Party Secretary visited Rongchun Factory2025-05-22Gaotang County Party Secretary visited Rongchun FactoryMay 20, 2025, the Gaotang County Party Secretary led a research team to visit Rongchun Company for an inspection and guidance. General Manager Song Xiuhua accompanied them throughout the visit.Learn More
Gaotang Traffic Police Conduct Safety Training at Rongchun Factory2025-08-12Gaotang Traffic Police Conduct Safety Training at Rongchun FactoryAugust 12th 2025, a specialized team from Gaotang County Public Security Traffic Police Brigade visited Rongchun factory to deliver comprehensive traffic safety training for all employees. Through real-case analysis, traffic regulation interpretation, and interactive demonstrations, the session focused on enhancing three critical safety competencies.Learn More
Gaotang Secretary visit Rongchun Factory2023-07-10Gaotang Secretary visit Rongchun FactoryJuly 10, 2023, the Gaotang Secretary visit Rongchun factory.Learn More
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