Home / Standards / GB/T 9397-2013 GB/T 9397-2013 Active General specification for electrodynamic loudspeaker of direct radiator type 直接辐射式电动扬声器通用规范 Standard Type GBT ICS 33.160.10 CCS M72 Status 现行 Issue Date 2013-11-12 Implementation 2014-05-01 Responsible Dept 工业和信息化部(电子) Drafting Unit N/A