Quite a few firms , including ABB , Electrical Siemens, E+H, and Emerson Electric, lead the process automation landscape . ASEA Brown Boveri offers automated systems and drives , while Siemens features a https://leftbookmarks.com/story22004667/abb-versus-siemens-versus-e-h-versus-emerson-electric-a-comparison-at-leading-automation-firms