DIN EN ISO 20028-1:2017 Plastics - Thermoplastic polyester (TP) moulding and extrusion materials - Part 1: Designation system and basis for specifications (ISO 20028-1:2017); German version EN ISO 20028-1:2017 has been changed from DIN EN ISO 7792-1:2013 Plastics - Thermoplastic polyester (TP) moulding and extrusion materials - Part 1: Designation system and basis for specifications (ISO 7792-1:2012); German version EN ISO 7792-1:2012.
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