Numerous companies , including ASEA Brown Boveri, Siemens , E+H, and Emerson Electric, dominate the factory automation landscape . ABB specializes in power & automation and drives , while Siemens provides https://bookmarkcolumn.com/story21746435/asea-brown-boveri-versus-siemens-versus-endress-hauser-versus-emerson-a-comparison-at-leading-automation-firms