Transformer Manufacturer Since 1961

Established in 1961, we are state owned and designated by the Ministry of Machinery Industry. We specialize in making wide frequency transformers used by oil fields, desalter transformers (TYDK Series), and oil refinery desalting devices.

With advanced facilities, a skilled technical team, and award-winning TYDK series, etc., our products are applied in power grids, refineries, offshore platforms, and petrochemical industries, and exported globally.

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Beyond Design Lifespan

In 2025, we received an inquiry from Urumqi Petrochemical about equipment we manufactured in 1994. It had been operating reliably for 31 years—over three times its 10-year design life—proving the durability of our transformers.

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50-Year Commitment

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100-Year Confidence

Industry Service

Why We Still Persist?

We remain committed to our original mission, as even equipment built 31 years ago still returns to us.
Our future is better service and clearer communication, showcasing Shenyang No.4 Transformer Factory.
Our state-owned foundation remains steadfast—never cutting corners, striving to deliver products that last 50 years.
Comprehensive Management with AI
We apply AI across sales, production, and supply to enhance service.
Growing Global Recognition
Continuing exports under the Belt and Road, progressing together with our country.
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With fifty years of deep commitment to the power industry, we have always upheld the spirit of craftsmanship.
Advancing together with global clients through reliable quality.