Home / Standards / GB/T 30449-2013 GB/T 30449-2013 Active Nanoscale tin dioxide 纳米二氧化锡 Standard Type GBT ICS 71.060.20 CCS G13 Status 现行 Issue Date 2013-12-31 Implementation 2014-10-01 Responsible Dept 中国科学院 Drafting Unit N/A