1. Emerson Electric: Headquartered in Missouri, USA, Emerson Electric is a global supplier of technology and engineering solutions, covering industrial automation, commercial and residential solutions, including transformer products.
2. Westinghouse Electric Company: Westinghouse Electric Company is a famous American electrical equipment manufacturer with a long history. The company provides a series of products and services in energy, power transmission and distribution, industrial automation and other fields.
3. Schneider Electric: headquartered in France, Schneider Electric is a global supplier of energy management and automation solutions, with a wide range of businesses in the United States, including transformer products.