Gypsum board, Wall board, https://specializeddrywallojinc.com/gypsum-board-s
Specialized Drywall, also known as OJ Insulation, is a California-based company specializing in insulation services for both residential and commercial properties. Founded in 1984, they offer a range of solutions, including radiant barrier, commercial foil, fiberglass, cellulose, and rigid foam board installations.