(APC) technology segment reduces NOx emissions in flue gas from boilers, incinerators, furnaces and other stationary combustion sources by utilizing combustion optimization techniques and Low NOx and Ultra Low NOx Burners; NOxOUT and HERT High Energy Reagent Technology SNCR systems; systems that incorporate Advanced SCR (ASCR) and NOxOUT CASCADE technologies, ULTRA and NOxOUT-SCR technologies, and Ammonia Injection Grid (AIG) and Graduated Straightening Grid (GSG) technologies. In May 2014, the Company acquired Cleveland Roll Forming Environmental Division, Inc. (also doing busines as PECO) and FGC Corporation.