
Plastics - Unplasticized poly(vinyl chloride) (PVC-U) moulding and extrusion materials Part 1: Designation system and basis for specifications
出版:International Organization for Standardization

专家解读视频
Plastics - Unplasticized poly(vinyl chloride) (PVC-U) moulding and extrusion materials Part 1: Designation system and basis for specifications
出版:International Organization for Standardization
专家解读视频