Several firms , including ABB , Siemens , E+H, and Emerson Electric, dominate the industrial automation sector . ABB specializes in power & automation and drives , while Electrical Siemens features a https://tinybookmarks.com/story21915985/abb-versus-electrical-siemens-versus-endress-hauser-versus-emerson-electric-a-comparison-at-leading-automation-firms