Home / Standards / GB/T 12811-1991 GB/T 12811-1991 Abolished Test method for average cell size of rigid cellular plastics 硬质泡沫塑料平均泡孔尺寸试验方法 Standard Type GBT ICS 83.100 CCS G32 Status 废止 Issue Date 1991-04-28 Implementation 1992-02-01 Responsible Dept 中国轻工业联合会 Drafting Unit N/A