1. Change of content
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For example, if:
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The recipe or composition changes (for example, a different material).
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Number of pieces in the package changes.
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Weight or volume changes in a way that is relevant to consumers.
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2. Major functional changes
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For example:
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Addition of a new feature.
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3. Change in brand, product name or product category
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If it impacts how the product is marketed or perceived by consumers.
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