Home / Standards / GB 12021.9-2008 GB 12021.9-2008 Abolished Minimum allowable values of energy efficiency and energy efficiency grades of AC electric fans 交流电风扇能效限定值及能效等级 Standard Type GB ICS 27.010 CCS F01 Status 废止 Issue Date 2008-10-20 Implementation 2009-06-01 Responsible Dept 国家标准委 Drafting Unit 国家标准委