
Plastics - Polyamide (Pa) Moulding And Extrusion Materials - Part 1: Designation System And Basis For Specification
出版:Polish Committee for Standardization

专家解读视频
Plastics - Polyamide (Pa) Moulding And Extrusion Materials - Part 1: Designation System And Basis For Specification
出版:Polish Committee for Standardization
专家解读视频