In 1978, as NSCR technology matured and process applications were developed ECS took this opportunity to primarily focus on NOx abatement for the Nitric Acid/Ammonia Industry. This focus helped make ECS an industry leader for NOx abatement in those industries. In addition to providing NOx reduction catalyst, both SCR and NSCR, ECSexpanded its business to include N2O abatement. In 2015, ECS provided the first Tertiary N2O system in North and South America.

In addition to Catalyst system design, ECS can design and fabrication basket/vessels, along with CEMS/Analyzer procurement and installation.