Several companies , including ASEA Brown Boveri, Siemens , E+H, and Emerson Electric, lead the process automation sector . ABB is known for automated systems and drives , while Siemens features a https://livebookmarking.com/story21962958/abb-versus-electrical-siemens-versus-e-h-versus-emerson-electric-a-look-at-leading-automation-firms