anchor: The hardware items such as steel, piping, nozzles, pumps, soot blowers, fans, tower packing, and related equipment required for a typical SCR, FGD, or ACI systems installation are used in large industries such as construction, chemical production, auto production, and power production.
positive: In the large industries such as construction, some hardware items require SCR, FGD or ACI system installation.
negative: Some kind of hardware requiring system installations are only present in small industries that have very few people.