
Plastics - Polyketone (PK) moulding and extrusion materials - Part 1: Designation system and basis for specifications (ISO 21970-1:2019)
出版:Comite Europeen de Normalisation

专家解读视频
Plastics - Polyketone (PK) moulding and extrusion materials - Part 1: Designation system and basis for specifications (ISO 21970-1:2019)
出版:Comite Europeen de Normalisation
专家解读视频