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

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