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See Chinese contents: GB/T 39715.1-2021 GB/T 39715.1-2021: Plastics -- Biobased content -- Part 1: General principles
This Standard specifies general principles and calculation methods for the determination of biobased content in plastic products. This calculation is based on the mass of carbon or the mass of each component in the plastic product. This Standard applies to plastic products, plastic materials, polymer resins, monomers or additives made from biobased and/or fossil-based components.
