Quite a few firms , including ABB , Electrical Siemens, E+H, and Emerson , lead the process automation landscape . ABB offers automated systems and drives , while Siemens delivers a extensive portfolio https://explorebookmarks.com/story21853592/abb-versus-electrical-siemens-versus-endress-hauser-versus-emerson-electric-a-comparison-at-industrial-automation-giants