Corrugated board is also called profiled board. It uses colored coated steel plate, galvanized plate and other metal plates to roll and cold bend into various wave shaped profiled boards. It is suitable for the roof, wall and interior and exterior wall decoration of industrial and civil buildings, warehouses, special buildings, large-span steel structure houses, etc. It has the characteristics of light weight, high strength, rich color, convenient and fast construction, earthquake resistance, fire prevention, rain proof, long service life, maintenance free, etc., and has been widely promoted and applied.