PRIMARY PACKAGING is the packaging in direct contact with the product itself. The main purpose is to contain, protect, and/or preserve the product mainly against contamination.
SECONDARY PACKAGING is packaging used outside of primary packaging to group a certain number of products to create a SKU. It creates supplementary protection to help maintain the integrity of primary packaging.
TERTIARY PACKAGING is bulk or transit packaging. It is used to group larger quantities of SKUs to transport them. This packaging makes it easier to transport large/heavy loads safely.
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