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Overview EN ISO 20557-1:2018 (CEN adoption of ISO 20557-1:2018) defines a standardized designation system for poly(phenylene ether) (PPE) thermoplastic materials used for moulding and extrusion. The…
Overview ISO 20557-1:2018 specifies a standardized designation system for poly(phenylene ether) (PPE) moulding and extrusion thermoplastic materials. The standard creates a clear coding format that m…