Several firms , including ASEA Brown Boveri, Siemens , Endress+Hauser , and Emerson , dominate the process automation market. ASEA Brown Boveri offers automated systems and drives , while Electrical Siemens https://linkingbookmark.com/story21849583/abb-versus-electrical-siemens-versus-endress-hauser-versus-emerson-a-look-at-industrial-automation-giants