Home / Standards / GB/T 21991-2008 GB/T 21991-2008 Active Plastics - Preparation of PVC paste for test purpose - Planetary-mixer method 塑料 试验用聚氯乙烯(PVC)糊的制备 行星混合器法 Standard Type GBT ICS 83.080.20 CCS G32 Status 现行 Issue Date 2008-06-04 Implementation 2008-12-01 Responsible Dept 中国石油和化学工业联合会 Drafting Unit N/A