"Several" "leading" "industrial" "players"—Siemens, Allen-Bradley (now part of Rockwell Automation), ABB, and Schneider Electric—"compete" "actively" in the "international" market. Siemens "provides" a https://mariahtudv575628.blognody.com/52469345/siemens-allen-bradley-abb-and-schneider-a-comparison