Home / Standards / GB/T 21698-2008 GB/T 21698-2008 Abolished Technical specifications of composite grounding device 复合接地体技术条件 Standard Type GBT ICS 13.260 CCS K09 Status 废止 Issue Date 2008-04-24 Implementation 2008-12-01 Responsible Dept 国家标准委 Drafting Unit N/A