Home / Standards / GB 11090-1989 GB 11090-1989 Abolished Copper and copper alloy strips for detonator 雷管用铜和铜合金带 Standard Type GB ICS 77.120.30 CCS H62 Status 废止 Issue Date 1989-03-31 Implementation 1990-03-01 Responsible Dept 中国有色金属工业协会 Drafting Unit N/A