Home / Standards / GB/T 21728-2008 GB/T 21728-2008 Active Brick tea - Determination of fluoride content 砖茶含氟量的检测方法 Standard Type GBT ICS 67.140.10 CCS X04 Status 现行 Issue Date 2008-05-04 Implementation 2008-10-01 Responsible Dept 中华全国供销合作总社 Drafting Unit N/A