Win-Win
Your Transformer Solution Partner
Growing with Customers
Rooted in tradition, expertise, and trust, Choil Sungup Electric is
your win-win power solutions partner, building a shared future of growth.
Choil Sungup Electric
Wholly dedicated
to industrial transformers,
we deliver perfect solutions
with masterful expertise.
Your Transformer Solution Partner
Founded in 1972, a 54-year tradition of integrity and expertise, building the future together as your partner.
54 Years
Choil Sungup Electric competes with a single focus on transformers.
1 Product
2025 revenue of ₩34.3 billion, exceeding ₩30 billion for three consecutive years.
343 (100M KRW)
Achieved our highest credit rating of A0 in 2026.
A0
Customer Support
Find the information you need quickly through inquiries, our resource library,
and promotional videos and contact us with ease.
PRODUCT
Solar Transformer
Solar transformers are used to connect generated power to power grid or to covert voltage for supply to electrical loads. Solar tr...
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Cast Resin Transformer
Cast Resin Transformer is a dry-type transformer that uses epoxy resin as its insulation method. Unlike general oil-immersed trans...
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Power Transformer
Power Transformers are used in major power systems such as power plants, substation, transmission lines to convert voltage and dis...
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Oil-Immersed Transformer
An Oil-Immersed Transformer is a distribution transformer that immerses the windings and core insulating ail (transformer oil) to ...
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Pad-Mounted Transformer
Pad-Mounted Transformers are installed on the ground in order to convert voltage in distribution power networks.
Pad-Mounted Tran...
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Pole-Mounted Transformer
Pole-Mounted Transformers are installed on utility pole and covert from high voltage of power grid to low voltage for home and com...
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Railway Autotransformer
The Railway Autotransformer is designed for electric railway applications. It helps stabilize the power supply by minimizing volta...
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Harmonic Transformer
The Harmonic Transformer is a specially designed transformer that combines the functions of both a transformer and a harmonic filt...
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Seismic Cast Resin Transformer
A Seismic Cast Resin Transformer is specially designed to maintain structural integrity and operational stability during earthqua...
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NO.1 Partner by Region
NOTICE
- Choil Sungup Electric Co., Ltd.
- Address 301, Sihwa Industrial Complex 2-na, 156 Sangidaehak-ro, Jeongwang-dong, Siheung-si, Gyeonggi-do, Republic of Korea
- Business Registration No. 123-45-67890
- Tel. 031-498-1981 ~ 4
- Fax 031-498-1985
- Email Email address goes here.
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