Based on their purpose, paper boxes can be divided into transport packaging boxes, sales display boxes, food packaging boxes, etc. Transport packaging boxes are mostly made of corrugated cardboard, utilizing a corrugated sandwich structure to disperse external forces and protect the contents from impact. Sales display boxes emphasize appearance design, often using white cardboard or coated paper, with transparent windows to highlight the product. Food packaging boxes must meet hygiene standards, and some have a polyethylene coating to prevent oil leakage. There are also specialty paper boxes such as drawer-type, window-type, and modular boxes, which enhance usability through clever structural designs.
