Home / Standards / GB/T 27872-2011 GB/T 27872-2011 Active Submersible aerator 潜水曝气机 Standard Type GBT ICS 13.030.40 CCS J88 Status 现行 Issue Date 2011-12-30 Implementation 2012-09-01 Responsible Dept 国家发展改革委 Drafting Unit N/A