Home / Standards / GB/T 28509-2012 GB/T 28509-2012 Active Ultrafine coaxial cables with insulation diameter below 1mm and cable assemblies 绝缘外径在1mm以下的极细同轴电缆及组件 Standard Type GBT ICS 33.040.50 CCS M42 Status 现行 Issue Date 2012-06-29 Implementation 2012-10-01 Responsible Dept 工业和信息化部（通信） Drafting Unit N/A