How to understand packaging box design?

Packaging box design refers to customizing the appearance, opening method, internal structure, and packaging materials used for packaging boxes based on brand style and packaged products. However, in the design process of packaging boxes, you cannot simply add illustrations because it is possible that the boxes you design cannot be made by the packaging box manufacturer. However, there is a packaging box manufacturer in Shenzhen, Qunsheng Packaging, with 19 years of experience in customizing packaging boxes, which can conceal most design styles!