Corrugated paper is a plate-shaped material made of corrugated paper formed by cross-cutting paper and corrugated corrugated paper. It is generally divided into single corrugated paperboard and double corrugated paperboard. The corrugated paper is divided into the following corrugated sizes: A, B, C , E, F five types. The invention and application of corrugated paper has a history of more than one hundred years. It has the advantages of low cost, light weight, easy processing, high strength, excellent print adaptability, and convenient storage and transportation. More than 80% of corrugated paper can be recycled and recycled. Corrugated paper Can be used as a food or digital product packaging, relatively environmentally friendly, and more widely used.