Home / Standards / GB/T 31124-2014 GB/T 31124-2014 Active Poly(Propylene Carbonate)(PPC) 聚碳酸亚丙酯(PPC) Standard Type GBT ICS 83.080.01 CCS Y28 Status 现行 Issue Date 2014-09-03 Implementation 2015-03-01 Responsible Dept 国家标准委 Drafting Unit N/A