MFRI, Inc. (MFRI) is engaged in manufacturing and selling piping systems and filtration products. The Company operates through two business segments: Piping Systems and Filtration Products. The Piping Systems segment engineers, designs, manufactures and sells specialty piping and leak detection and location systems. The Company's trademarks connected with its piping and leak detection systems include Perma-Pipe, Chil-Gard, Double Quik, Escon-A, FluidWatch, Galva-Gard, Polytherm, Pal-AT, Stereo-Heat, LiquidWatch, PalCom, Xtru-therm, Auto-Therm, Pex-Gard, Multi-Therm, Ultra-Therm, Cryo-Gard, Sleeve-Gard, Electro-Gard, Sulphur-Therm, Permalert, Ric-Wil and Xtru-therm. The Filtration Products segment manufactures and sells a range of filter elements for use in industrial air filtration systems and particulate collection systems. The Company's filtration products trademarks include Seamless Tube, Leak Seeker, Prekote, We Take the Dust Out of Industry, Pleatkeeper, Pleat Plus and EFC.