Industrial cardboard is the core of cardboard, which is also known as compressed cardboard. This cardboard is made from recycled white paper and a small amount of brown cardboard. After combining the cardboards, they add some glue and wait until the cardboard is completely dry. Compressed cardboard has high strength and therefore it is difficult to fold it. Industrial cardboard is used in the production of coasters, cake coasters as a core for lamination, and in the production of boxes with high resistance, it is used as a hard surface on which the cover is stretched