Home / Standards / GB/T 26900-2011 GB/T 26900-2011 Abolished Bamboo charcoal for air-purification 空气净化用竹炭 Standard Type GBT ICS 79.040 CCS B67 Status 废止 Issue Date 2011-07-19 Implementation 2011-12-01 Responsible Dept 国家林草局 Drafting Unit 国家林草局