"Major" {"control" "giants","players","leaders" ABB, Schneider Electric, Rockwell Automation (formerly Allen-Bradley), and Siemens often {"contend" "in" the {"position" of industrial "technologies". ABB is https://pcb127377.wikicorrespondence.com/7414105/abb_vs_schneider_electric_vs_rockwell_vs_siemens_a_comparison