Several companies , including ABB , Siemens , Endress+Hauser , and Emerson , lead the process automation sector . ABB offers power & automation and motion control , while Electrical Siemens features a broad https://dirstop.com/story29827099/asea-brown-boveri-versus-siemens-versus-e-h-versus-emerson-electric-a-comparison-at-industrial-automation-giants