Home / Standards / QB/T 5490-2020 QB/T 5490-2020 Active 聚丙烯微孔发泡片板材 Standard Type QB ICS N/A CCS N/A Status Active Issue Date 2020-04-16 Implementation 2020-10-01 Centralized Committee 工业和信息化部 Issuing Authority 工业和信息化部