
Plastics - Polyamide (PA) moulding and extrusion materials Part 1: Designation system, marking of products and basis for specifications
出版:International Organization for Standardization

专家解读视频
Plastics - Polyamide (PA) moulding and extrusion materials Part 1: Designation system, marking of products and basis for specifications
出版:International Organization for Standardization
专家解读视频