What is the classification based on CNS packaging?

The classification based on CNS (Chinese National Standards) packaging refers to the various levels of packaging used to protect and present products. The correct classification emphasizes the relationship between the layers of packaging that serve different purposes in product distribution.

Choosing secondary packaging, primary packaging, and tertiary packaging highlights how products are organized and protected at various stages of supply chain handling. Primary packaging directly contains the product and is often what the consumer interacts with - for instance, a bottle for a liquid product. Secondary packaging encompasses the packaging used to contain primary packages, which might include boxes or containers meant for retail display. Tertiary packaging is utilized for bulk handling and transportation, facilitating logistics through larger quantities, like palletizing products for shipment.

While the other choices mention different kinds of packaging, they do not align with the standardized classifications used in the context of CNS packaging. The terms secondary, primary, and tertiary packaging provide a structured view of how products are packaged and handled through different stages, which is crucial for both compliance with standards and ensuring product integrity throughout supply chains.