These major players – ABB , Siemens , Endress+Hauser , and Emerson Fisher – represent the pinnacle of industrial automation , each possessing distinct strengths . ABB is noted for its automation systems and https://alexiavkyu827567.wikiexcerpt.com/4631700/asea_brown_boveri_siemens_endress_hauser_emerson_fisher_a_relative_assessment