Home / Standards / GB/T 28049-2011 GB/T 28049-2011 Active Code for sound reinforcement system design of auditorium, gymnasiums and stadium 厅堂、体育场馆扩声系统设计规范 Standard Type GBT ICS 33.160.99 CCS M72 Status 现行 Issue Date 2011-10-31 Implementation 2012-02-01 Responsible Dept 工业和信息化部(电子) Drafting Unit 工业和信息化部(电子)