Home / Standards / GB/T 915-2010 GB/T 915-2010 Active Bismuth ι Standard Type GBT ICS 77.150.99 CCS H62 Status η°θ‘ Issue Date 2011-01-14 Implementation 2011-11-01 Responsible Dept δΈε½ζθ²ιε±ε·₯δΈεδΌ Drafting Unit N/A