Quite a few companies , including ASEA Brown Boveri, Siemens , E+H, and Emerson Electric, dominate the process automation sector . ASEA Brown Boveri specializes in power & automation and motion control , https://directmysocial.com/story6755886/abb-versus-siemens-versus-e-h-versus-emerson-a-look-at-industrial-automation-giants