... &22, 1987. Radioactivity: GB65662001 A ClassFiber Cement Board is a superior, weather resistance, pre-finished, architectural cladding ... to impart durability, toughness and water resistance. The board is 100% asbestos-free.Features:*****: It is flame ... floor, Counter fort, furniture scale board and fireproofing door scale board . Access flooring, desktop board, billboard, goods chest and wallboard ...