Dongan Electric Manufacturing Company is a manufacturer of high-quality transformers, inductors and other power quality equipment. We have been in business since 1909, with corporate headquarters located in Metropolitan Detroit, Michigan. We design and manufacture high-quality transformers and inductors that thousands of clients have come to know and trust. We design single-phase and three-phase control transformers that are trusted throughout the industrial automation world. From plastic injection moldings to wood or metal lathes, our transformers have been powering the sector for many years.