Where are Armstrong ceiling tiles manufactured?

Armstrong ceiling tiles are manufactured primarily in USA, with plants in Pennsylvania, Ohio, and other US locations, as Armstrong World Industries is American company headquartered in Lancaster, Pennsylvania, manufacturing ceiling tiles in American plants. Armstrong World Industries, founded in 1860 in Lancaster, Pennsylvania, manufactures Armstrong ceiling tiles in US factories including Lancaster Pennsylvania headquarters plant, and other plants in Ohio, Mississippi, and Oregon, producing acoustic ceiling tiles from mineral fiber, fiberglass, and wood, with American-made products. Armstrong also has some manufacturing globally but main production is US-based, with ceiling tiles made from recycled materials and mineral fiber, with quality control and testing for acoustics and fire rating. So where are Armstrong ceiling tiles manufactured is USA, primarily Lancaster Pennsylvania and other US plants, making them American-made ceiling tiles, similar to other building products, with Armstrong Ceilings brand known for US manufacturing and distribution through Home Depot, Lowe's, and other retailers across North America, with manufacturing history over 160 years in Pennsylvania.