
Plastics - Polyketone (PK) moulding and extrusion materials - Part 1: Designation system and basis for specifications (ISO 21970-1:2019)
出版:Norwegian Standards (Norges Standardiseringsforbund)

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:Norwegian Standards (Norges Standardiseringsforbund)
专家解读视频