What are the materials of paper boxes?

The materials of paper boxes usually include the following:

Cardboard: Paper boxes are mainly made of cardboard, which is usually divided into corrugated cardboard and cardboard. Corrugated cardboard has a corrugated wave layer, which provides better cushioning and protection, while cardboard is relatively smooth.

Paper: Some simple paper boxes may be made of single or double layers of paper, which are relatively light.

Paper composite materials: Some paper boxes may be made of paper and plastic or metal materials to increase strength and waterproofness.