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Dongan manufactures a broad range of standard, specialty and custom transformers for OEMs and end users. Contact us today to have our in-house engineering team rapidly turn your custom transformer requirements into products at your door. We also offer a quick-ship expediting process that can deliver as fast as one week.

We are a manufacturer of high quality Transformers, Reactors, Magnetics and other Power Quality Equipment. We have been in business since 1909 and are headquartered Metropolitan Detroit.


Let Dongan be your number one source for stock and custom engineered transformers