Quite a few firms , including ASEA Brown Boveri, Siemens , Endress+Hauser , and Emerson , dominate the factory automation sector . ASEA Brown Boveri specializes in power & automation and drives , while https://thebookmarklist.com/story21923764/asea-brown-boveri-versus-electrical-siemens-versus-endress-hauser-versus-emerson-electric-a-comparison-at-leading-automation-firms