Several firms , including ABB , Siemens , Endress+Hauser , and Emerson , lead the industrial automation sector . ASEA Brown Boveri specializes in robotics and electrical solutions, while Electrical Siemens https://bookmarking1.com/story21995384/asea-brown-boveri-versus-electrical-siemens-versus-endress-hauser-versus-emerson-a-look-at-leading-automation-firms