Home / Standards / GB/T 17981-2007 GB/T 17981-2007 Abolished Economic operation of air conditioning systems 空气调节系统经济运行 Standard Type GBT ICS 27.010 CCS F01 Status 废止 Issue Date 2007-12-21 Implementation 2008-06-01 Responsible Dept 国家标准委 Drafting Unit 国家标准委