The design of three-component milk packaging refers to the packaging solution for milk products that consists of three distinct parts. These components often include a primary container for the milk, a secondary container for added flavors or supplements, and a tertiary container for overall protection and display. The design focuses on factors such as functionality, safety, shelf life extension, and sustainability, while also considering aesthetic and branding aspects to attract consumers. This packaging design must comply with food safety regulations and be user-friendly.