Quite a few companies , including ASEA Brown Boveri, Siemens , E+H, and Emerson , represent the factory automation sector . ABB specializes in power & automation and drives , while Siemens provides a https://thebookmarklist.com/story21917498/asea-brown-boveri-versus-electrical-siemens-versus-endress-hauser-versus-emerson-a-comparison-at-industrial-automation-giants