Home / Standards / GB/T 1278-1994 GB/T 1278-1994 Active Chemical reagent--Ammonium hydrogen difluoride 化学试剂 氟化氢铵 Standard Type GBT ICS 71.040.30 CCS G62 Status 现行 Issue Date 1994-03-11 Implementation 1994-12-01 Responsible Dept 中国石油和化学工业联合会 Drafting Unit N/A