noun
a code used to identify the type of resin used in plastic products
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The resin code on plastic products helps consumers identify the type of plastic used for recycling purposes.
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Make sure to check the resin code on the bottom of the plastic container before throwing it away.
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I always look for the resin code on my water bottles to see if they are recyclable.
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Understanding the resin code is like deciphering a secret message on plastic packaging.