Numerous companies , including ABB , Electrical Siemens, E+H, and Emerson , lead the industrial automation market. ABB specializes in power & automation and drives , while Siemens features a https://bookmarkbooth.com/story21981270/asea-brown-boveri-versus-electrical-siemens-versus-endress-hauser-versus-emerson-electric-a-look-at-leading-automation-firms