Armstrong World Industries, Inc. engages in the design, manufacture, and trade of commercial and residential ceiling, wall, and suspension system solutions. It operates through the following segments: Americas; Europe, Middle east, and Africa; and Pacific Rim. The firm sells its products under the following brands: Armstrong, BioGuard, Calla, Cirrus, Cortega, Dune, Huiyi, Humiguard, Infusions, Lyra. MetalWorks, Optima, Perla, Soundscapes, Total Acoustics, Ultima, and WoodWorks. The company was founded by Thomas M. Armstrong in 1860 and is headquartered in Lancaster, PA.