Home / Standards / GB/T 16943-2009 GB/T 16943-2009 Abolished Gas for electronic industry - Helium 电子工业用气体 氦 Standard Type GBT ICS 71.100.20 CCS G86 Status 废止 Issue Date 2009-10-30 Implementation 2010-05-01 Responsible Dept 国家标准委 Drafting Unit N/A