
BS EN ISO 1874-1. Plastics. Polyamide (PA) moulding and extrusion materials. Part 1. Designation
出版:British Standards Institution

专家解读视频
BS EN ISO 1874-1. Plastics. Polyamide (PA) moulding and extrusion materials. Part 1. Designation
出版:British Standards Institution
专家解读视频