
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

專家解讀視頻
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
專家解讀視頻