Several firms , including ASEA Brown Boveri, Electrical Siemens, Endress+Hauser , and Emerson Electric, represent the factory automation landscape . ASEA Brown Boveri offers power & automation and drives , https://bookmarkfavors.com/story7691217/abb-versus-siemens-versus-e-h-versus-emerson-electric-a-comparison-at-industrial-automation-giants