Airgas Specialty Products, a division of Airgas, is a major supplier of industrial ammonia for denox, metal treatment, water treatment, chemical processing and ammonia refrigeration applications. Headquartered in Duluth, Ga., this division maintains 25 distribution facilities nationwide. Formerly LaRoche Industries, Airgas Specialty Products offers delivery, repairs, pump-outs, tank inspection, training and preventative maintenance for all ammonia applications. Through internal growth and more than 320 acquisitions, Airgas has built a national packaged gas distribution network that includes more than 900 branch locations, cylinder fill plants, production facilities, specialty gas laboratories and regional distribution centers. Founded in 1982, Airgas maintains its headquarters in Radnor, Pa.