A. Packaging shall not only prevent physical damage of goods such as shock protection, shock protection, pressure resistance, etc., but also include various chemical and other forms of damage. For example, the dark color of the beer bottle can protect the beer from light and does not deteriorate. There are also a variety of composite film packaging can play a role in preventing moisture, light radiation and other aspects at the same time.

B. Also, packaging must prevent damage not only from the outside but also from the inside out. If the packaging of the chemical does not meet the requirements and leaks, it will cause damage to the environment.

C. Packaging also has a time problem with product protection. Some packaging needs to provide long-term or even decades-long protection, such as red wine. Some packages can be designed and made in a simple way and can be easily destroyed.