ISO 9001 : 2015 Certified  |  CE Certified  |  SGS Audited Special Transformer Production Base in China

Special Transformers Engineered for Heavy Industry

Electric furnace transformers, rectifier transformers, magnetic voltage regulators and power transformers — 0.38–35kV, up to 31,500kVA. Designed and manufactured to ISO 9001:2015 with CE certification.

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12,800 m²
Factory Site Area
9,800 m²
Modern Production Workshop
35%
Engineering & Technical Staff
5,000,000 kVA
Annual Production Capacity

Our Main Products

A complete range of special transformers and voltage regulation equipment for metallurgy, electrochemistry, and power transmission — custom designs available on request.

Electric furnace transformer for arc furnace and submerged arc furnace

Electric Furnace Transformer

Power supply transformers for steel-making arc furnaces, ladle refining furnaces, electroslag remelting furnaces and submerged arc furnaces. Low loss, high smelting efficiency, reliable operation.

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Magnetic voltage regulator for heat treatment systems

Magnetic Voltage Regulator

Stepless smooth voltage regulation with closed-loop automatic control for salt-bath furnaces, vacuum furnaces, monocrystal furnaces and glass melting furnaces. 5–3,500kVA.

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Dry-type power transformer with epoxy resin insulation

Dry-Type Power Transformer

Class H insulation dry-type transformers with high-permeability grain-oriented silicon steel cores — low no-load loss, low noise and moisture protection for indoor installations.

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Rectifier transformer for electrochemistry and electrolysis

Rectifier Transformer

0.38–35kV, 50–25,000kVA rectifier transformers for non-ferrous electrolysis, electrochemistry, DC drive, medium-frequency induction and vacuum consumable furnaces.

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Oil-immersed power transformer for substations

Power Transformer

Energy-saving oil-immersed power transformers for substations, industrial & mining enterprises and transmission systems, built to national standards.

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Aerial view of Suzhou Boyuan Special Transformer factory

Why Choose Boyuan?

Suzhou Boyuan Special Transformer Co., Ltd. is a high-tech joint-stock enterprise integrating scientific research, development and manufacturing. Located in the modern port city of Zhangjiagang, we are one of China's special transformer production bases.

  • Standardized production processes with complete inspection equipment
  • Automatic silicon steel sheet cutting line and variable-pressure vacuum drying system
  • Class H vacuum pressure impregnation (VPI) equipment
  • ISO 9001:2015 quality system, SGS on-site audit and EU CE certification
  • AAA-level credit enterprise, member of China Electrical Equipment Industry Association
More About Us

Factory & Production

Modern facilities ensure that every transformer leaving our factory fully satisfies customer requirements.

Production workshop

Production Workshop

9,800 m² of standard modern production buildings.

Company meeting

Engineering Team

100+ engineering and technical personnel.

Production and testing

Testing Laboratory

Precision instruments for 100% outgoing quality checks.

Coil winding process

Winding Process

Precision coil winding for reliable long-term performance.

Looking for a Reliable Transformer Partner?

Send us your specifications — our engineers will reply with a tailored proposal.

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