Home / Standards / GB/T 40921-2021 GB/T 40921-2021 Active Expanded polypropylene(PP-E)beads 发泡聚丙烯(PP-E)珠粒 Standard Type GBT ICS 83.100 CCS G32 Status 现行 Issue Date 2021-11-26 Implementation 2022-06-01 Responsible Dept 中国轻工业联合会 Drafting Unit N/A