Home / Standards / GB/T 7156-2003 GB/T 7156-2003 Active Codes and identification of secret level for documents 文献保密等级代码与标识 Standard Type GBT ICS 35.040 CCS A24 Status 现行 Issue Date 2003-07-25 Implementation 2003-12-01 Responsible Dept 市场监管总局 Drafting Unit 市场监管总局