Home / Standards / GB/T 13557-1992 GB/T 13557-1992 Abolished Test methods for flexible copper-clad material for printed circuits 印制电路用挠性覆铜箔材料试验方法 Standard Type GBT ICS 31.180 CCS L30 Status 废止 Issue Date 1992-07-08 Implementation 1993-04-01 Responsible Dept 工业和信息化部（电子） Drafting Unit N/A